How accurate is this calculator vs. a real-world TCO?

Methodologically it’s the same approach AAA, Edmunds, and Consumer Reports use — purchase price + fuel + maintenance + insurance − resale, summed over 5 years. What it simplifies: state-specific sales tax + registration fees (varies $300-$2,500/yr; not modeled, applies similarly to both vehicles so cancels out in the gap), opportunity cost of capital tied up in the down payment (excluded — most TCO frameworks treat purchase as sunk), charging-equipment cost (a Level-2 charger is $500-$1,500 + $300-$1,000 install — meaningful for low-mileage drivers, negligible for high-mileage; not in calc). Use this as the strategic gut-check; real-world variance vs the calc number runs ±$3-5K depending on local fuel + insurance pricing and your driving pattern.

Why does electricity rate dominate the result so heavily?

Because EV fuel cost scales linearly with the rate, and 5 years of fuel is the second-largest line item after purchase. At the default 13K mi/yr × 3.0 mi/kWh × 5 yrs = ~22K kWh of charging. At $0.13/kWh that’s $2,800; at $0.30/kWh it’s $6,500 — a $3,700 swing on a single input. The calculator surfaces the exact ‘electricity flip-point’ (the rate at which EV stops winning) in the result panel. For most users with home Level-2 charging at $0.10-0.18/kWh, EV wins comfortably; for users who charge mostly at public DC fast chargers at $0.30-0.45/kWh, the comparison flips and ICE often becomes the better economics.

What about supercharger / public DC fast-charging cost?

If you charge mostly at superchargers (Tesla Supercharger ~$0.28/kWh on standard plan, $0.34/kWh peak; EVgo ~$0.36/kWh; Electrify America ~$0.43/kWh), use the public-charging rate as your input — not the home-charging rate. The calculator’s flip-point usually lands around $0.25-0.35/kWh for the default inputs, meaning supercharger-only operation often makes the EV TCO close to or worse than ICE. Realistic mixed strategy for most owners: 80-90% home-charging at $0.13/kWh + 10-20% supercharger at $0.30/kWh → blended ~$0.16/kWh, still comfortably below most flip-points.

Does the EV federal tax credit really apply?

Sometimes. Section 30D rules tightened materially in 2023-2024: the EV must meet sourcing requirements for battery components (50% North American by 2024) and critical minerals (40% North American or free-trade-partner by 2024), be assembled in North America, and the buyer must earn under $150K single / $300K joint. As of 2024-25, qualifying EVs include most Tesla models, Ford F-150 Lightning + Mach-E (some trims), Chevy Bolt + Equinox EV, Rivian R1T/R1S (partial), Cadillac Lyriq, GM Hummer EV. NOT qualifying: most Volkswagen, Hyundai, Kia, Audi, BMW (i4 / iX), Mercedes EQS, Lucid Air, Polestar 2 (until late-2024 reshoring). Lease workaround: lessors claim the commercial-vehicle credit (Section 45W) and may pass through the savings — varies by automaker. Set the input to $0 if uncertain about your specific configuration.

Why use 3.0 mi/kWh and 28 MPG as the efficiency defaults?

3.0 mi/kWh is the mid-tier blended EV efficiency: Tesla Model 3 long-range ~4.2 mi/kWh, Model Y ~3.8, ID.4 ~3.3, Bolt ~3.5, Mustang Mach-E ~3.0, F-150 Lightning ~2.0, Rivian R1S ~2.2. Use 4.0+ if you’re looking at a Model 3 or compact-EV; use 2.0-2.5 if you’re buying an electric truck. 28 MPG matches mid-size sedan baseline (Camry 32 highway / 27 combined, Accord 30 combined, Sonata 30 combined) — adjust upward for compacts (Civic 36) and downward for trucks (F-150 22, Silverado 19). Both efficiency assumptions are surfaced in the result-detail tooltips so you can see exactly what’s baked in.

Should I include the cost of a home Level-2 charger?

If you don’t already have one, yes — it’s a real $1,500-2,500 cost most TCO frameworks don’t model. Hardware: $400-800 for the charger (ChargePoint, Wallbox, Tesla Wall Connector); installation: $300-1,500 depending on panel-amp availability + run length to garage. Federal tax credit: 30% of cost up to $1,000 (Section 30C, available through 2032). Some utilities + state programs add $250-1,000 rebate. To model this in the calculator, add the net cost (hardware + install − credits − rebates) to the EV price input — it represents real upfront capital required to make EV economics work.

What about battery-replacement risk at year 8-10?

Modern EV battery warranties: 8 yrs / 100K miles (federal minimum), 10 yrs / 150K (Tesla, Hyundai), some up to 12 yrs unlimited (Volkswagen ID series). Replacement cost out of warranty: $5,000-15,000 for compact EVs, $15,000-30,000 for trucks/SUVs. Real-world data (Recurrent Auto, Tesla 2023 impact report): < 1% of EVs need full battery replacement before year 10; the typical degradation pattern is 8-12% capacity loss at year 8 (Tesla data) — annoying but not requiring replacement. The 5-yr TCO calculator deliberately excludes battery-replacement risk since most owners stay within warranty over the horizon. For 8-10 yr ownership, add $50-100/mo to your EV maintenance line as a battery-reserve fund and re-run.

How does the resale-value delta work?

Modern EVs (post-2020 Tesla, Rivian, Lucid, Mustang Mach-E) retain 45-55% of MSRP at 5 yrs — comparable to top mid-size ICE brands (Toyota, Honda, Subaru retain 50-60%; Ford / GM retain 35-45%). Older EVs (early Nissan Leaf, Chevy Bolt 2017-2019) retained 30-40% at 5 yrs because battery-degradation concerns suppressed used demand. The calculator’s baseline is 45% (parity with mid-size ICE). Set resale delta positive (e.g., +5 or +10) if you’re buying a Tesla / Rivian with strong residual data; negative (-10 to -20) if you’re buying a less-popular EV brand (Polestar, Lucid Gravity, BMW iX). KBB and Edmunds publish model-specific 5-yr residuals; check yours and adjust.

What if I plan to keep the car 10 years instead of 5?

Run the calc as-is (5-yr horizon) to see year-5 TCO + resale, then mentally project year 5-10. Years 6-10 favor EV more strongly: continued fuel-cost compounding (especially if gas appreciates 4-5%/yr), maintenance gap widens (ICE engine + transmission service costs ramp), insurance gap narrows (EV repair-cost variance compresses with parts-availability). However, year 8-10 introduces battery-replacement risk for older EVs (less of a concern post-2022 models). Rule of thumb: if 5-yr TCO favors EV by > $5K, 10-yr TCO favors EV by 1.8-2.2× that gap. If 5-yr is a coin-flip, 10-yr usually tips clearly to EV unless you’re a very low-mileage driver.

Why doesn’t the calculator include sales tax / registration?

Because they apply to both vehicles roughly proportionally (sales tax % is the same; registration is annual and similar for cars in the same weight class), so they cancel out in the EV-vs-ICE GAP — which is what you actually need to make the decision. State exceptions where this matters: NJ + WA + many EU jurisdictions exempt EVs from sales tax (a $1,500-3,500 advantage for EVs); some states levy EV-specific annual registration fees ($50-225/yr extra) to compensate for foregone gas-tax revenue. To model these state-specific factors, adjust the EV price input downward by the sales-tax exemption amount, or add the EV-specific reg fee × 5 yrs to the EV maintenance line.

What’s the carbon-footprint comparison?

Using EIA 2024 grid avg ~0.85 lb CO₂/kWh and 8.89 kg CO₂/gal of gasoline: at 13K mi/yr, EV emits ~3.7 t CO₂/yr (charged on US-avg grid mix); ICE emits ~4.6 t CO₂/yr. Over 5 yrs: EV ~18.5 t vs ICE ~23 t — EV ~20% lower lifetime CO₂ on US grid mix. The gap is much larger on cleaner grids (CA / WA / NY ~50% renewable → EV ~70% lower), and inverts on coal-heavy grids (KY / WY / WV ~20-30% lower or worse vs ICE — sometimes a wash). Battery-production CO₂ (~5-8 t for a typical EV battery) is recovered within 1-2 years of operation on an avg-grid; ~6 mo on a clean grid. Carbon-footprint detail not in the headline output but worth running through the Carbon Footprint Calculator (L.5.6 — coming).

What about maintenance differences I’m not thinking of?

EV maintenance items vs ICE: BOTH need tires (similar wear), cabin air filter (annual), 12V auxiliary battery (every 4-6 yrs), wiper blades, washer fluid, coolant flush at 100K miles. EV-specific: brake fluid every 2-3 yrs (same as ICE but less critical due to regen reducing brake-system stress), high-voltage battery coolant flush at 100K miles. ICE-only items eliminated: engine oil + filter (every 5-10K miles, $50-100 each), spark plugs (every 30-100K miles, $200-400), transmission fluid + filter (every 60-100K miles, $200-500), timing belt (every 60-90K miles, $400-1,000), exhaust system (every 80-150K miles, $300-800 if needed). Real lifetime savings: EV saves ~$3-6K vs ICE over 100K miles in pure maintenance. Calculator’s default $600/yr saving × 5 yrs = $3K is the conservative end of that range.

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EV vs ICE Total Cost of Ownership Calculator (5-Year)

Drop EV + ICE prices, annual miles, electricity rate, gas price, gas trajectory, maintenance + insurance deltas, EV tax credit, and 5-yr resale delta. Calculator computes 5-year total cost of ownership for both vehicles, surfaces fuel / maintenance / insurance / resale gaps, and finds the electricity rate at which the comparison flips. Anchored to AAA Driving Cost study, NAIC insurance data, KBB / BLS resale benchmarks, and IRS Section 30D EV tax credit.

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Reviewed by CalcBold EditorialLast verified May 4, 2026Methodology

EV price

MSRP or your negotiated out-the-door price for the EV. Don’t include the federal tax credit (it’s a separate input below) — this should be the gross purchase price you’d quote on the contract. Model 3 RWD ~$42K, Bolt EUV ~$28K, Mustang Mach-E ~$45K, F-150 Lightning ~$60K, Rivian R1S ~$78K.

Comparable ICE price

MSRP for the ICE alternative you’d realistically buy instead. Match by class — Camry / Accord / Sonata sedan ~$30-34K, RAV4 / CR-V SUV ~$32-38K, F-150 / Silverado pickup ~$40-55K. Don’t cherry-pick a stripped-down ICE model unless that’s your honest alternative.

Annual miles driven

Honest annual mileage — pull from your insurance dashboard or last 12 months of fill-ups. US average 13,500/yr; commuters 15-20K; remote-workers 5-10K; rideshare drivers 30-50K. Higher miles favor EV (fuel-cost advantage compounds); lower miles favor ICE (purchase-price gap dominates).

Home-charging electricity rate

Your at-home Level-2 charging rate, all-in (delivery + supply). EIA US residential avg ~$0.16/kWh (2024); Hawaii $0.40+, California $0.30+, Pacific Northwest $0.10. If you charge mostly at superchargers ($0.28-0.45/kWh), use that number — it routinely flips the comparison. The calculator surfaces the exact electricity flip-point in the result.

Current gas price

Local pump price for the grade your ICE alternative needs. EIA national avg 2024-25 $3.20-3.80; CA / HI / WA $4.50+; TX / OK / AR $2.80-3.20. Use today’s number — the gas-trajectory input below extrapolates it forward.

Gas-price trajectory

Expected annual gas-price growth over the 5-yr horizon. EIA long-run US average ~2-3%/yr; recent 2020-2024 stretch ran 4-6%/yr volatile. Conservative: 2%; baseline: 3%; aggressive (peak-oil narrative): 5%+. Higher trajectory tilts the comparison toward EV (compounding fuel savings).

EV maintenance savings vs ICE

How much LESS the EV costs in annual maintenance vs ICE. Positive = EV saves; negative = EV costs more. Real-world EV: $300-500/yr (tires + cabin filter + brake fluid; no oil, no transmission service, brake pads last 2-3× longer due to regen). Real-world ICE: $800-1,200/yr (AAA mid-size avg). Default $600/yr saving is the typical mid-range. Heavy-truck EVs save $800-1,000+; older / out-of-warranty EVs may cost more if a battery module fails.

EV insurance premium vs ICE

How much MORE the EV costs in annual insurance vs ICE (NAIC US full-coverage baseline $1,500/yr). Positive = EV costs more; negative = EV cheaper. Most EVs run 10-30% higher because parts cost more per claim (battery + sensors + software). Tesla Insurance and EV-specific carriers (Lemonade, Hugo) are usually 5-15% cheaper than legacy. Get a real quote for your model — premium varies by 2-3× across carriers.

Federal EV tax credit applied

IRS Section 30D credit: up to $7,500 for qualifying new EVs (battery components + critical-minerals sourcing requirements). Use $0 if you exceed income caps ($150K single / $300K joint), the EV doesn’t qualify (most German / Korean / Chinese-made EVs partially or fully excluded), or if you’re leasing (lessor claims it; consumer benefit varies). Used-EV credit: up to $4,000 for qualifying used EVs under $25K — model that here too if applicable.

EV 5-yr resale delta vs ICE

Adjustment to EV 5-yr resale value (% of MSRP). 0 = EV retains 45% of MSRP at year 5 (parity with mid-size ICE — modern Tesla / Rivian benchmark). Positive = EV outperforms (Tesla Model Y currently +5 to +10% premium over ICE class). Negative = EV underperforms (older Leafs, Bolts ran -10 to -20% vs ICE due to battery-degradation concerns; that’s narrowing as used-EV market matures). KBB and Edmunds publish model-specific 5-yr residuals.

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What This Calculator Does

The EV vs ICE TCO Calculator answers the question pinned at the top of every car-shopper’s spreadsheet: over 5 years of ownership, does the EV actually come out ahead — and what’s the single variable that flips the answer? Drop EV + ICE prices, annual miles, your home- charging electricity rate, current gas price, gas trajectory, maintenance + insurance deltas, the federal EV tax credit applicable to your situation, and a 5-year resale delta. The calculator builds total-cost-of-ownership for both vehicles, surfaces the gap line-by-line (purchase, fuel, maintenance, insurance, resale), and computes the exact electricity rate at which the EV stops winning. Anchored to AAA Driving Cost study (maintenance baseline), NAIC insurance averages, KBB / BLS resale residuals, EIA fuel and electricity tariff data, and IRS Section 30D for the EV credit.

Most online EV-vs-ICE calculators are manufacturer-sponsored and biased — they assume favorable home-charging rates, ignore insurance deltas, skip resale, or hardcode the maximum tax credit without checking eligibility. CalcBold’s version surfaces every assumption explicitly, so you can stress-test the inputs that actually matter for your situation: home vs supercharger charging, your specific tax-credit eligibility, your actual driving pattern. The calculator’s flip-point row is the differentiator: it tells you not just ‘EV wins by $9K’ but at what electricity rate that answer flips — which is the question driving most real-world decisions.

The Math — 5-Year Total Cost of Ownership

Three layers compound. Purchase differentialsets the starting deficit for EV — typically $5-15K higher MSRP, partially offset by the federal tax credit (up to $7,500 for qualifying new EVs through 2032). The credit only applies if the EV meets battery-sourcing rules + you’re under income caps ($150K single / $300K joint); set to $0 if uncertain. Operating cost stream over 5 years is where EV recovers. Fuel: at default 13K mi/yr × 3.0 mi/kWh × $0.13/kWh, EV fuel is ~$2,800 for 5 years vs ICE at 13K ÷ 28 MPG × ~$3.80 avg × 5 = ~$8,800 — a $6K saving. Maintenance: AAA mid-size baseline $1,000/yr ICE vs EV ~$400/yr (no oil, transmission, exhaust, spark plugs; brake pads last 2-3× longer due to regen) = $3K savings over 5 yrs. Insurance: EV typically $200-500/yr higher (battery + sensor parts cost) — partial offset. Resale at year 5 closes the gap further: modern EVs from Tesla / Rivian retain 45-55% of MSRP, comparable to top mid-size ICE brands (KBB / Edmunds residuals).

The flip-point math is what makes this calculator decision-grade. The EV fuel cost is linear in electricity rate, while every other line item stays fixed. Solve for the rate at which EV TCO equals ICE TCO and you get the threshold electricity price above which the EV stops winning. For default inputs that threshold typically lands around $0.40-0.55/kWh — well above home-charging rates ($0.10-0.18) but sometimes below supercharger rates ($0.30-0.45). Translation: home-charging EV almost always wins; supercharger-only operation often flips the comparison or makes it a coin-flip.

A Worked Example — “Tesla Model 3 vs Toyota Camry”

Suppose $42K EV (Tesla Model 3 RWD) vs $32K ICE (Toyota Camry SE), 13,000 miles/yr, $0.13/kWh home-charging, $3.50/gal gas with 3%/yr appreciation, $600/yr EV maintenance savings, $200/yr EV insurance premium, $7,500 federal credit, and 0% resale delta (parity). The calculator builds:

EV TCO: $42,000 − $7,500 credit + $2,817 electricity + $2,000 maint + $8,500 insurance − $18,900 resale (45%) = $28,917
ICE TCO: $32,000 + $7,963 gasoline + $5,000 maint + $7,500 insurance − $14,400 resale (45%) = $38,063
EV wins by ~$9,150, equivalent to a $1,830/yr ownership-cost advantage over 5 years.

The flip-point row says: at this set of inputs, EV stops winning above ~$0.55/kWh electricity. Translation: even charging entirely at Electrify America fast-chargers ($0.43/kWh peak), the EV still wins — though by a much smaller margin (~$2-3K). At Tesla Supercharger $0.30/kWh, the gap stays close to the home- charging case ($7-8K). The flip-point only triggers if you’re routinely paying premium DC fast-charging at peak hours, which most owners rarely do.

Now flip one variable: drop annual miles to 6,000/yr (low-mileage user). Fuel stream shrinks proportionally; maintenance + insurance + resale stay the same. EV TCO drops to ~$26K; ICE drops to ~$32.5K; EV still wins but by only $6.5K — and the flip-point compresses to ~$0.32/kWh, meaning supercharger- only operation now makes the comparison a coin-flip. Low-mileage drivers with no home- charging access are the segment where EV economics often fail to dominate.

The Decisive Variable Is Almost Always Electricity Rate

EV fuel cost scales linearly with the electricity rate, and 5 years of fuel is the second-largest line item after purchase. Run the same default inputs at different rates:

$0.10/kWh (low-rate states — WA, OR, ID): EV wins by ~$9,800. Slam-dunk.
$0.13/kWh (US average): EV wins by ~$9,150. Default case, comfortable.
$0.18/kWh (CA / NE / NY home): EV wins by ~$7,800. Still clear.
$0.30/kWh (Tesla Supercharger standard): EV wins by ~$5,200. Narrowing.
$0.43/kWh (Electrify America peak): EV wins by ~$2,400. Coin-flip territory.
$0.55/kWh (premium DC fast): EV breaks even / starts to lose. Past this, ICE wins.

Rule of thumb: for every $0.10/kWh increase in average electricity rate, the EV gap narrows by ~$2,200 over 5 years (at default mileage). That’s why home-charging access is the single most important practical variable in any real-world EV-vs-ICE decision: it determines whether your blended electricity rate sits below the flip-point. If you can install a Level-2 home charger, EV economics dominate under almost any other set of inputs. If you can’t, run the calc with $0.30+/kWh and decide based on whether the remaining $3-5K gap is worth the EV experience for you.

Common Mistakes That Distort the Answer

Cherry-picking the cheapest ICE option. Comparing a $42K Tesla Model 3 to a $20K Honda Civic isn’t honest — the buyer who’s shopping a Model 3 isn’t cross-shopping a Civic. Match the comparison vehicles by class and trim level: Model 3 ↔ Camry / Accord SE, Model Y ↔ RAV4 / CR-V Hybrid, F-150 Lightning ↔ F-150 XLT, Rivian R1S ↔ Land Cruiser.
Assuming the federal tax credit applies automatically. Section 30D rules tightened materially in 2023-2024. Many German / Korean / Chinese-made EVs are partially or fully excluded; income caps disqualify high earners. Set the input to $0 if uncertain, then add it back after confirming with your tax advisor or the dealer’s eligibility paperwork.
Modeling supercharger-only operation as home-charging cost. If you’ll charge 80% at superchargers, your blended rate is $0.25-0.40/kWh, not $0.13. Either run the calc with the realistic blended rate, or decide that home-charging is a prerequisite for EV economics in your case.
Skipping the home-charger cost. Hardware $400-800 + install $300-1,500 = $700- $2,300 net of credits. Not in the calc by default; add to the EV price input if modeling fairly. Often the difference between ‘EV wins by $9K’ and ‘EV wins by $7K’ — meaningful for borderline cases.
Using national-average gas + electricity instead of your local rates. State variance is huge: gas $2.80 (TX) to $4.80+ (CA / HI), electricity $0.10 (WA) to $0.40+ (HI). Pull both numbers from your recent statements / fill-up receipts and use your real local rates. EV economics in CA look very different from EV economics in TX even at the same MSRP.
Ignoring insurance variance. EV insurance premiums vary 2-3× across carriers — Tesla Insurance and EV-specific carriers (Lemonade, Hugo) often beat legacy carriers (Geico, State Farm, Progressive) by 15-25% on EV policies. Get real quotes for both vehicles before committing — the $200/yr default delta might be $500/yr or $-100/yr in your situation.
Forgetting that EV resale parity is a recent phenomenon. Older Leafs (2013-2018) and Bolts (2017-2019) retained 30-40% at year 5 because battery- degradation concerns suppressed used demand. Modern Tesla / Rivian / Mustang Mach-E retain 45-55% — comparable to top mid-size ICE. Use KBB / Edmunds 5-yr residual data for your specific model rather than assuming parity.

Related Calculators

Pair the EV vs ICE TCO calc with the Solar ROI Calculator — solar bonds hard with EV ownership, since every kWh you generate displaces gas at the gas- station price (effectively $0.50-0.80 per equivalent-kWh). Once your home-charging marginal cost drops to near-zero past solar payback, EV economics dominate ICE under almost any scenario. For pure per-mile fuel cost framing (without the full purchase + main + insurance + resale layers), run the EV vs Gas Cost Calculator — it’s the sister calc focused only on the ‘what does it cost to drive’ question. If you’re considering leasing (often the right call when the federal tax credit doesn’t apply to your purchase but passes through on the lease), run the Lease vs Buy Car Calculator with EV-specific terms — leasing also caps battery-degradation risk at 36 months, which is useful for first-time EV buyers anxious about that variable. And if you commute heavily, the True Cost Per Mile Calculator adds the time-cost of commuting (which doesn’t change between EV and ICE) on top of the per-mile fuel + maintenance — useful for the paired ‘should I switch to remote work AND switch to EV’ decision rather than evaluating both independently.

How to Read the Verdict

The headline output is the 5-year TCO gap. But the more honest number is the flip-rate — the electricity rate at which EV ties ICE. If your actual home rate is far below that flip point, EV wins by a comfortable margin even if gas prices fall.

EV ahead by $5,000+ AND your rate is well below flip. Buy EV. Resale risk is the wildcard, but 5-year operating savings buffer it.
Gap under $3,000 either direction.Effectively tied — pick on driving experience, charging access, road-trip frequency. Don’t let the spreadsheet be the tiebreaker on a 5-year purchase.
EV credit doesn’t apply (income cap or non-qualifying vehicle). Re-run with credit at $0 — flip point shifts dramatically. Used-EV $4,000 credit (income under $75K single / $150K MFJ) often saves the math.
No home charging available. EV economics collapse — DCFC public rates ($0.40-0.60/kWh) wipe out the fuel savings. Skip EV until home charging becomes feasible.

Frequently Asked Questions

The most common questions we get about this calculator — each answer is kept under 60 words so you can scan.

How accurate is this calculator vs. a real-world TCO?
Methodologically it’s the same approach AAA, Edmunds, and Consumer Reports use — purchase price + fuel + maintenance + insurance − resale, summed over 5 years. What it simplifies: state-specific sales tax + registration fees (varies $300-$2,500/yr; not modeled, applies similarly to both vehicles so cancels out in the gap), opportunity cost of capital tied up in the down payment (excluded — most TCO frameworks treat purchase as sunk), charging-equipment cost (a Level-2 charger is $500-$1,500 + $300-$1,000 install — meaningful for low-mileage drivers, negligible for high-mileage; not in calc). Use this as the strategic gut-check; real-world variance vs the calc number runs ±$3-5K depending on local fuel + insurance pricing and your driving pattern.
Why does electricity rate dominate the result so heavily?
Because EV fuel cost scales linearly with the rate, and 5 years of fuel is the second-largest line item after purchase. At the default 13K mi/yr × 3.0 mi/kWh × 5 yrs = ~22K kWh of charging. At $0.13/kWh that’s $2,800; at $0.30/kWh it’s $6,500 — a $3,700 swing on a single input. The calculator surfaces the exact ‘electricity flip-point’ (the rate at which EV stops winning) in the result panel. For most users with home Level-2 charging at $0.10-0.18/kWh, EV wins comfortably; for users who charge mostly at public DC fast chargers at $0.30-0.45/kWh, the comparison flips and ICE often becomes the better economics.
What about supercharger / public DC fast-charging cost?
If you charge mostly at superchargers (Tesla Supercharger ~$0.28/kWh on standard plan, $0.34/kWh peak; EVgo ~$0.36/kWh; Electrify America ~$0.43/kWh), use the public-charging rate as your input — not the home-charging rate. The calculator’s flip-point usually lands around $0.25-0.35/kWh for the default inputs, meaning supercharger-only operation often makes the EV TCO close to or worse than ICE. Realistic mixed strategy for most owners: 80-90% home-charging at $0.13/kWh + 10-20% supercharger at $0.30/kWh → blended ~$0.16/kWh, still comfortably below most flip-points.
Does the EV federal tax credit really apply?
Sometimes. Section 30D rules tightened materially in 2023-2024: the EV must meet sourcing requirements for battery components (50% North American by 2024) and critical minerals (40% North American or free-trade-partner by 2024), be assembled in North America, and the buyer must earn under $150K single / $300K joint. As of 2024-25, qualifying EVs include most Tesla models, Ford F-150 Lightning + Mach-E (some trims), Chevy Bolt + Equinox EV, Rivian R1T/R1S (partial), Cadillac Lyriq, GM Hummer EV. NOT qualifying: most Volkswagen, Hyundai, Kia, Audi, BMW (i4 / iX), Mercedes EQS, Lucid Air, Polestar 2 (until late-2024 reshoring). Lease workaround: lessors claim the commercial-vehicle credit (Section 45W) and may pass through the savings — varies by automaker. Set the input to $0 if uncertain about your specific configuration.
Why use 3.0 mi/kWh and 28 MPG as the efficiency defaults?
3.0 mi/kWh is the mid-tier blended EV efficiency: Tesla Model 3 long-range ~4.2 mi/kWh, Model Y ~3.8, ID.4 ~3.3, Bolt ~3.5, Mustang Mach-E ~3.0, F-150 Lightning ~2.0, Rivian R1S ~2.2. Use 4.0+ if you’re looking at a Model 3 or compact-EV; use 2.0-2.5 if you’re buying an electric truck. 28 MPG matches mid-size sedan baseline (Camry 32 highway / 27 combined, Accord 30 combined, Sonata 30 combined) — adjust upward for compacts (Civic 36) and downward for trucks (F-150 22, Silverado 19). Both efficiency assumptions are surfaced in the result-detail tooltips so you can see exactly what’s baked in.
Should I include the cost of a home Level-2 charger?
If you don’t already have one, yes — it’s a real $1,500-2,500 cost most TCO frameworks don’t model. Hardware: $400-800 for the charger (ChargePoint, Wallbox, Tesla Wall Connector); installation: $300-1,500 depending on panel-amp availability + run length to garage. Federal tax credit: 30% of cost up to $1,000 (Section 30C, available through 2032). Some utilities + state programs add $250-1,000 rebate. To model this in the calculator, add the net cost (hardware + install − credits − rebates) to the EV price input — it represents real upfront capital required to make EV economics work.
What about battery-replacement risk at year 8-10?
Modern EV battery warranties: 8 yrs / 100K miles (federal minimum), 10 yrs / 150K (Tesla, Hyundai), some up to 12 yrs unlimited (Volkswagen ID series). Replacement cost out of warranty: $5,000-15,000 for compact EVs, $15,000-30,000 for trucks/SUVs. Real-world data (Recurrent Auto, Tesla 2023 impact report): < 1% of EVs need full battery replacement before year 10; the typical degradation pattern is 8-12% capacity loss at year 8 (Tesla data) — annoying but not requiring replacement. The 5-yr TCO calculator deliberately excludes battery-replacement risk since most owners stay within warranty over the horizon. For 8-10 yr ownership, add $50-100/mo to your EV maintenance line as a battery-reserve fund and re-run.
How does the resale-value delta work?
Modern EVs (post-2020 Tesla, Rivian, Lucid, Mustang Mach-E) retain 45-55% of MSRP at 5 yrs — comparable to top mid-size ICE brands (Toyota, Honda, Subaru retain 50-60%; Ford / GM retain 35-45%). Older EVs (early Nissan Leaf, Chevy Bolt 2017-2019) retained 30-40% at 5 yrs because battery-degradation concerns suppressed used demand. The calculator’s baseline is 45% (parity with mid-size ICE). Set resale delta positive (e.g., +5 or +10) if you’re buying a Tesla / Rivian with strong residual data; negative (-10 to -20) if you’re buying a less-popular EV brand (Polestar, Lucid Gravity, BMW iX). KBB and Edmunds publish model-specific 5-yr residuals; check yours and adjust.
What if I plan to keep the car 10 years instead of 5?
Run the calc as-is (5-yr horizon) to see year-5 TCO + resale, then mentally project year 5-10. Years 6-10 favor EV more strongly: continued fuel-cost compounding (especially if gas appreciates 4-5%/yr), maintenance gap widens (ICE engine + transmission service costs ramp), insurance gap narrows (EV repair-cost variance compresses with parts-availability). However, year 8-10 introduces battery-replacement risk for older EVs (less of a concern post-2022 models). Rule of thumb: if 5-yr TCO favors EV by > $5K, 10-yr TCO favors EV by 1.8-2.2× that gap. If 5-yr is a coin-flip, 10-yr usually tips clearly to EV unless you’re a very low-mileage driver.
Why doesn’t the calculator include sales tax / registration?
Because they apply to both vehicles roughly proportionally (sales tax % is the same; registration is annual and similar for cars in the same weight class), so they cancel out in the EV-vs-ICE GAP — which is what you actually need to make the decision. State exceptions where this matters: NJ + WA + many EU jurisdictions exempt EVs from sales tax (a $1,500-3,500 advantage for EVs); some states levy EV-specific annual registration fees ($50-225/yr extra) to compensate for foregone gas-tax revenue. To model these state-specific factors, adjust the EV price input downward by the sales-tax exemption amount, or add the EV-specific reg fee × 5 yrs to the EV maintenance line.
What’s the carbon-footprint comparison?
Using EIA 2024 grid avg ~0.85 lb CO₂/kWh and 8.89 kg CO₂/gal of gasoline: at 13K mi/yr, EV emits ~3.7 t CO₂/yr (charged on US-avg grid mix); ICE emits ~4.6 t CO₂/yr. Over 5 yrs: EV ~18.5 t vs ICE ~23 t — EV ~20% lower lifetime CO₂ on US grid mix. The gap is much larger on cleaner grids (CA / WA / NY ~50% renewable → EV ~70% lower), and inverts on coal-heavy grids (KY / WY / WV ~20-30% lower or worse vs ICE — sometimes a wash). Battery-production CO₂ (~5-8 t for a typical EV battery) is recovered within 1-2 years of operation on an avg-grid; ~6 mo on a clean grid. Carbon-footprint detail not in the headline output but worth running through the Carbon Footprint Calculator (L.5.6 — coming).
What about maintenance differences I’m not thinking of?
EV maintenance items vs ICE: BOTH need tires (similar wear), cabin air filter (annual), 12V auxiliary battery (every 4-6 yrs), wiper blades, washer fluid, coolant flush at 100K miles. EV-specific: brake fluid every 2-3 yrs (same as ICE but less critical due to regen reducing brake-system stress), high-voltage battery coolant flush at 100K miles. ICE-only items eliminated: engine oil + filter (every 5-10K miles, $50-100 each), spark plugs (every 30-100K miles, $200-400), transmission fluid + filter (every 60-100K miles, $200-500), timing belt (every 60-90K miles, $400-1,000), exhaust system (every 80-150K miles, $300-800 if needed). Real lifetime savings: EV saves ~$3-6K vs ICE over 100K miles in pure maintenance. Calculator’s default $600/yr saving × 5 yrs = $3K is the conservative end of that range.