EV Loan Calculator with Trade-In & Negative Equity
Calculate your EV loan payment when trading in a vehicle with negative equity. See your new monthly payment, loan-to-value (LTV) ratio, total interest, and the true cost of rolling negative equity into your new loan.
Your inputs
Your result
Amortization schedule (first 12 months)
| Mo. | Payment | Principal | Interest | Balance |
|---|
Break-even timeline (estimate)
Methodology & assumptions
Amortization formula: M = P × [r(1+r)^n] / [(1+r)^n - 1], where M is monthly payment, P is amount financed, r = APR / 12 / 100, and n = loan term in months.
Negative equity = current loan payoff - trade-in value.
Amount financed = new EV price + negative equity + sales tax - down payment - manufacturer incentive - state rebate.
True cost of negative equity is the difference in total interest between (a) financing the full amount including the shortfall and (b) financing the same amount minus the shortfall, holding all other inputs constant. This isolates the extra interest attributable to the rolled shortfall.
LTV ratio = amount financed / new EV price. Lenders may use a different vehicle value; actual approval depends on credit, income, and lender policy.
Break-even month uses a declining-balance depreciation model with your entered annual rate. This is an estimate, not a guarantee.
Assumptions: Fixed APR for the full term; no extra payments; sales tax rate is user-entered; no federal tax credit is assumed (30D was repealed for post-Sept. 30, 2025 acquisitions).
Limitations
This calculator provides estimates based on your inputs. It is not financial advice, a loan offer, or a guarantee of approval. Lenders set their own LTV caps, rates, and terms. State tax and rebate rules vary and change; verify with your state's Department of Revenue or DMV. Depreciation is a modeled estimate. Actual resale value depends on model, mileage, condition, and market conditions.
EV Loan Calculator with Trade-In & Negative Equity (2027)
This calculator estimates your new EV loan payment when you trade in a vehicle that is worth less than you still owe. It shows your monthly payment, the loan-to-value (LTV) ratio lenders use to decide whether to approve the deal, the total interest you will pay, and the true extra interest caused by rolling negative equity into the new loan.
Important 2027 note: The $7,500 federal Clean Vehicle Credit (Section 30D) was repealed in July 2025 for vehicles acquired after September 30, 2025. This calculator does not include a federal tax credit because one is not available for most 2027 purchases. State and local incentives may still apply and should be entered separately.
Key Takeaways
- Negative equity is the gap between what you owe on your current loan and what your vehicle is actually worth as a trade-in.
- Rolling negative equity into a new EV loan raises your monthly payment, your LTV ratio, and your total interest.
- Lenders typically cap LTV somewhere between 115% and 140%, depending on the lender and your credit profile. A deal that exceeds the cap is likely to be rejected.
- The true cost of negative equity is not the shortfall itself — it is the extra interest that shortfall generates over the life of the loan.
- Paying off negative equity with cash before trading in usually costs less than rolling it into a new loan, but it requires available funds.
- The federal EV tax credit is not a tool for absorbing negative equity in 2027. Most competitors still misstate this.
Calculate your EV loan payment now →
How This Calculator Works
What Is Negative Equity?
Negative equity (sometimes called being "upside down" or "underwater") means you owe more on your current vehicle loan than the vehicle is worth as a trade-in. If your payoff amount is $38,000 and a dealer offers $28,000 for the car, you have $10,000 of negative equity.
Positive equity is the opposite: the trade-in offer exceeds the payoff, and the difference reduces the amount you need to finance on the new vehicle. Zero equity means the trade-in value and payoff are equal.
The trade-in value used in this calculator should be the dealer's actual offer or a firm written appraisal — not a private-party listing price or an online instant-cash estimate. Those numbers are usually higher than what a dealer will actually pay, and using them understates your negative equity.
How We Calculate Your New Payment
The calculator follows the standard auto-loan amortization formula. First it determines the amount financed:
Amount Financed = New EV Price + Negative Equity + Sales Tax − Down Payment − Manufacturer Incentive − State Rebate
Then it calculates the monthly payment using the standard amortization formula:
M = P × [ r(1 + r)n ] ÷ [ (1 + r)n − 1 ]
Where M is the monthly payment, P is the amount financed, r is the monthly interest rate (APR ÷ 12 ÷ 100), and n is the loan term in months. Total interest is the monthly payment multiplied by the number of months, minus the amount financed.
The calculator assumes a fixed APR, no extra payments, and no prepayment penalty. If you plan to make extra payments or refinance later, your actual interest cost will be lower than the estimate shown.
Why Your LTV Ratio Matters
Loan-to-value (LTV) is the amount financed divided by the vehicle's price. A $44,100 loan on a $35,000 vehicle is 126% LTV. Lenders use LTV to measure how much risk they are taking. When LTV climbs above roughly 115%–120%, many lenders either decline the application or require a larger down payment, a shorter term, or a higher APR.
This calculator lets you select an LTV cap (115%, 120%, 125%, 130%, or 140%) and shows whether your deal falls inside or outside that threshold. The cap is a user-selected input, not a guarantee of approval. Actual approval depends on your credit score, income, debt-to-income ratio, employment history, and the specific lender's internal guidelines.
Use the calculator to see your result →
The True Cost of Rolling Negative Equity
The shortfall itself is only part of the cost. When you roll negative equity into a new loan, you pay interest on that shortfall for the entire loan term. The table below shows the extra interest attributable to the rolled amount — not the total interest on the loan, and not the negative equity itself.
All figures are calculated estimates based on a fixed APR and equal monthly payments. They assume no extra payments and no prepayment penalty. Actual results will vary with your specific loan terms.
| Negative Equity | APR | 48 Months | 60 Months | 72 Months |
|---|---|---|---|---|
| $5,000 | 6% | $636 | $800 | $966 |
| $5,000 | 8% | $859 | $1,083 | $1,312 |
| $5,000 | 10% | $1,088 | $1,374 | $1,669 |
| $10,000 | 6% | $1,272 | $1,600 | $1,933 |
| $10,000 | 8% | $1,718 | $2,166 | $2,624 |
| $10,000 | 10% | $2,176 | $2,748 | $3,339 |
| $15,000 | 6% | $1,908 | $2,400 | $2,899 |
| $15,000 | 8% | $2,577 | $3,248 | $3,936 |
| $15,000 | 10% | $3,264 | $4,122 | $5,008 |
| $20,000 | 6% | $2,545 | $3,200 | $3,865 |
| $20,000 | 8% | $3,436 | $4,331 | $5,248 |
| $20,000 | 10% | $4,351 | $5,496 | $6,677 |
Calculated estimate. The formula is: extra interest = negative equity × [ (amortization factor × term) − 1 ]. See the Methodology section below for details.
Current Federal and State EV Incentive Landscape (2027)
Incentives are the most frequently misstated part of the EV financing picture. Most online calculators still assume the $7,500 federal Clean Vehicle Credit is available. For most 2027 purchases, it is not.
Federal Clean Vehicle Credit Status
The Section 30D Clean Vehicle Credit was repealed in July 2025 for vehicles acquired after September 30, 2025. The companion Section 25E credit for used clean vehicles was repealed on the same timeline. This is a verified fact per the Congressional Research Service (CRS IF12570, updated April 2, 2026).
What this means for negative equity: the federal credit cannot be used to offset a trade-in shortfall in 2027. Any calculator or dealer worksheet that shows a $7,500 federal credit reducing your amount financed on a 2027 purchase is almost certainly out of date. The Section 45W credit for commercial clean vehicles is a separate program and does not apply to personal-use purchases.
State EV Rebates and Trade-In Tax Credits
State-level programs vary widely and change frequently. Some states offer point-of-sale rebates, some offer income-tax credits, and some have exhausted their funding entirely. A few states also allow a trade-in tax credit, meaning sales tax is calculated only on the difference between the new vehicle price and the trade-in value — which can reduce the amount financed when you have negative equity.
State rules require verification before you rely on them. This calculator allows you to enter a state EV rebate manually rather than auto-filling a figure that may be wrong. Before you finalize a deal, confirm your state's current program with your state energy office or department of revenue.
How Incentives Interact with Negative Equity
A state rebate reduces the amount financed, which lowers your monthly payment and your LTV ratio — but it does not directly cancel out negative equity. If you have $10,000 of negative equity and qualify for a $2,000 state rebate, you still have $8,000 of shortfall embedded in the new loan. Manufacturer incentives work the same way: they reduce the effective price, not the shortfall itself.
Roll vs. Pay Off: Which Is Better?
Rolling negative equity is not the only option. The table below compares the main paths. This is decision-support information, not financial advice. Your circumstances — available cash, credit profile, and how long you plan to keep the next vehicle — determine which path makes sense.
| Approach | Effect on Monthly Payment | Effect on Total Interest | Key Trade-Off |
|---|---|---|---|
| Roll negative equity into the new EV loan | Higher | Higher — you pay interest on the shortfall for the full term | No cash required upfront, but you may exceed the lender's LTV cap and pay more overall |
| Pay off negative equity with cash or savings | Lower | Lower — no interest is charged on the shortfall | Requires available cash; reduces your emergency buffer |
| Pay off with a separate personal loan | Two payments (auto + personal) | Depends on the personal loan APR vs. the auto loan APR | Can be cheaper if the personal loan rate is materially lower, but adds a second obligation and a second credit inquiry |
| Wait to trade in | Eventually lower | Lower on the next loan, but you keep paying on the current one | Your current vehicle keeps depreciating, so the shortfall may shrink slowly or not at all; waiting only helps if you pay down principal faster than the vehicle loses value |
Model your scenario with the calculator →
What Lenders Actually Allow
LTV caps are not published in one central database, and they change with credit conditions. The table below summarizes what is currently observable. Treat every figure as a starting point for a conversation with the lender, not as a rule.
| Lender Type | Typical LTV Cap | Source Status |
|---|---|---|
| Tesla Financial Services | 120%–130% | Not independently verified. Secondary source (TaxShark, February 2026). Confirm with Tesla before relying on it. |
| Some lenders (varies widely) | Up to 140% | Community observation. Leasehackr forum discussions, 2025. Not an authoritative lender statement. |
| Credit unions and banks | Varies — often 115%–125% | Requires verification. Policies differ by institution, credit tier, and vehicle age. |
A deal that exceeds the lender's LTV cap is usually declined outright. In some cases the lender will approve it with a larger down payment, a shorter term, or a higher APR. If your LTV is close to the cap — within about five percentage points — treat approval as uncertain rather than assumed.
Real-World Scenarios
These examples use the same formulas as the calculator. They are calculated estimates for illustration, not quotes. Your actual numbers will depend on the dealer's trade-in offer, your credit profile, your state's tax rules, and the lender's terms.
Scenario 1: $10,000 Negative Equity on a Tesla Model Y
A buyer owes $38,000 on a 2023 Model Y. The dealer offers $28,000 in trade. The buyer wants to finance a $35,000 Model Y with $3,000 down, a 6% sales tax rate, an 8% APR, and a 60-month term.
| Item | Amount |
|---|---|
| Trade-in value | $28,000 |
| Loan payoff | $38,000 |
| Negative equity | $10,000 |
| New EV price | $35,000 |
| Down payment | $3,000 |
| Sales tax (6%) | $2,100 |
| Amount financed | $44,100 |
| Monthly payment | $894 |
| Total interest | $9,545 |
| LTV ratio | 126% |
| LTV cap selected | 120% → likely declined |
| True cost of the $10,000 negative equity | ≈ $2,166 |
The payment is manageable, but the LTV is above a typical 120% cap. The buyer would likely need a larger down payment, a cheaper vehicle, or a lender with a higher cap. The $10,000 shortfall alone will cost roughly $2,166 in extra interest over the 60-month term.
Scenario 2: $20,000 Negative Equity on a Ford F-150 Lightning
A buyer owes $55,000 on a 2022 F-150 Lightning. The dealer offers $35,000. The buyer wants to finance a $50,000 Lightning with $5,000 down, a 6% sales tax rate, a 9% APR, and a 72-month term.
| Item | Amount |
|---|---|
| Trade-in value | $35,000 |
| Loan payoff | $55,000 |
| Negative equity | $20,000 |
| New EV price | $50,000 |
| Down payment | $5,000 |
| Sales tax (6%) | $3,000 |
| Amount financed | $68,000 |
| Monthly payment | $1,226 |
| Total interest | $20,243 |
| LTV ratio | 136% |
| LTV cap selected | 120% → likely declined |
| True cost of the $20,000 negative equity | ≈ $5,248 |
At 136% LTV this deal is well outside typical lender limits. Even a lender willing to go to 130% would likely decline it. The $20,000 shortfall adds roughly $5,248 in extra interest over 72 months on top of the $20,000 itself. This is the scenario where paying off part of the negative equity — or waiting — usually makes the most difference.
Scenario 3: Positive Equity Trade-In
A buyer owes $22,000 on a vehicle the dealer values at $30,000. The $8,000 of positive equity reduces the amount financed.
| Item | Amount |
|---|---|
| Trade-in value | $30,000 |
| Loan payoff | $22,000 |
| Positive equity | $8,000 |
| New EV price | $35,000 |
| Down payment | $0 |
| Sales tax (6%) | $2,100 |
| Amount financed | $29,100 |
| Monthly payment | $576 |
| Total interest | $5,471 |
| LTV ratio | 83% |
| LTV cap selected | 120% → within cap |
Positive equity is the favorable case. The trade-in reduces the loan balance, the LTV stays comfortably below typical caps, and there is no negative-equity interest penalty to account for.
Methodology and Assumptions
Amortization Formula
Monthly payment is calculated with the standard amortization formula:
M = P × [ r(1 + r)n ] ÷ [ (1 + r)n − 1 ]
P is the amount financed, r is the monthly interest rate (APR ÷ 12 ÷ 100), and n is the term in months. Total interest equals (M × n) − P. The true cost of negative equity equals the negative equity amount multiplied by [ (amortization factor × n) − 1 ]. This isolates the extra interest generated by the shortfall, rather than reporting total loan interest.
Depreciation Model
Where the calculator shows a break-even month — the point at which your loan balance falls below the vehicle's estimated value — it uses a declining-balance depreciation model with a default rate of 21% per year. That rate is an estimate drawn from published EV depreciation analysis (US Finance Calculators, 2026) and should be treated as a rough planning figure, not a prediction. Actual depreciation varies significantly by model, trim, mileage, battery health, local market conditions, and manufacturer price changes. You can override the rate in the calculator.
Tax and Rebate Assumptions
Sales tax is calculated on the vehicle price, adjusted for state trade-in tax credit rules where those rules are verified. Because state rules vary and change, the calculator allows you to enter the sales tax rate and any state rebate manually. Manufacturer incentives and state rebates are treated as reductions to the amount financed. The federal Clean Vehicle Credit is not included because it is not available for most 2027 purchases.
Limitations
- This calculator does not guarantee loan approval. LTV caps are user-selected inputs, not lender commitments.
- APR is an input, not a prediction. Your actual rate depends on your credit score, income, debt-to-income ratio, and the lender's pricing.
- The depreciation model is an estimate. It is not a resale-value guarantee.
- Dealer fees, registration fees, title fees, and add-on products (extended warranties, GAP insurance, paint protection) are not modeled. These can materially change the amount financed.
- State tax rules and rebate programs require independent verification. The calculator does not auto-fill state-specific figures that could be out of date.
- The calculator assumes a fixed APR and no extra payments. Extra payments or refinancing will reduce the actual interest cost.
Frequently Asked Questions
Can I roll negative equity into an EV loan?
Yes, in many cases — but only if the resulting LTV stays within the lender's cap. Rolling negative equity increases the amount financed, which raises the LTV. If the LTV exceeds the lender's limit (often 115%–125%, sometimes higher), the application is likely to be declined. A larger down payment or a less expensive vehicle can bring the LTV back within range.
What is the maximum negative equity I can roll into a car loan?
There is no universal maximum. The practical limit is the lender's LTV cap applied to the vehicle price. If a lender caps LTV at 120% and the vehicle costs $35,000, the maximum amount financed is $42,000. After subtracting the vehicle price, taxes, and any down payment, the remaining room is what can be rolled. Because caps vary by lender and credit tier, the answer depends on the specific lender.
Does Tesla accept negative equity?
Tesla Financial Services has been reported to cap LTV at roughly 120%–130%, but that figure is from a secondary source (TaxShark, February 2026) and has not been independently verified. Policies can change. Confirm directly with Tesla before assuming a specific deal will be approved. Other lenders may have different caps.
How is negative equity calculated on a car?
Negative equity is your current loan payoff minus the dealer's trade-in offer. If you owe $38,000 and the dealer offers $28,000, your negative equity is $10,000. Use the dealer's actual offer, not a private-party listing price, because the private-party figure overstates what the dealer will pay and understates your shortfall.
What is loan-to-value (LTV) on a car loan?
LTV is the amount financed divided by the vehicle's price. A $44,100 loan on a $35,000 vehicle is 126% LTV. Lenders use LTV to gauge risk. Higher LTV means less equity in the vehicle and a greater chance the lender loses money if the borrower defaults and the vehicle is repossessed. That is why high-LTV deals often come with higher APRs or are declined outright.
How much extra interest does negative equity add?
The extra interest depends on the shortfall amount, the APR, and the term. As a rough guide, $10,000 of negative equity at 8% APR over 60 months adds about $2,166 in extra interest. At 10% over 72 months, the same $10,000 adds about $3,339. The table in the "True Cost of Rolling Negative Equity" section above shows the full range.
Should I roll negative equity or pay it off?
Paying it off with cash is usually cheaper in total interest, but it requires available funds and reduces your cash buffer. Rolling it into the new loan preserves cash but costs more over time and may push the deal past the lender's LTV cap. A separate personal loan can be cheaper if its APR is materially lower than the auto loan APR, but it adds a second payment and a second credit inquiry. The right choice depends on your cash position, your credit profile, and how long you plan to keep the next vehicle.
What happens if I wait 12 months to trade in?
Waiting helps only if you pay down principal faster than the vehicle depreciates. EVs have depreciated quickly in recent years, so in many cases the shortfall shrinks slowly or not at all. Run both scenarios through the calculator — one with today's payoff and trade-in value, one with estimated figures 12 months out — before deciding that waiting will solve the problem.
Can I get out of an underwater EV lease?
Leases work differently from loans. An early lease termination usually requires paying the remaining payments plus a disposition fee, and the negative equity is calculated against the lease buyout price rather than the payoff. Some lessees transfer the lease to another party through a lease-transfer marketplace, but the original lessee typically remains liable if the new party defaults. Review the lease contract and confirm the early-termination terms with the leasing company before making a decision.
What happens if I total the car before I pay off the negative equity?
If the vehicle is totaled, your insurer pays the actual cash value. If that amount is less than your loan payoff, you still owe the difference — the deficiency balance. GAP insurance (guaranteed asset protection) covers that gap, but it is a separate product and is not included in a standard auto policy. If you are rolling significant negative equity into a new loan, check whether GAP coverage is available and what it costs.
Sources and Data Verification
| Claim | Source | Status |
|---|---|---|
| Section 30D Clean Vehicle Credit repealed for vehicles acquired after September 30, 2025 | Congressional Research Service, CRS IF12570 (updated April 2, 2026) | Verified |
| Average negative equity on trade-ins reached $6,884 in Q2 2026; nearly 30% of trade-in deals carried negative equity | NADA, citing Edmunds (July 2026) | Verified (secondary) |
| Tesla Financial Services LTV cap of 120%–130% | TaxShark (February 2026) | Not independently verified — confirm with lender |
| Some lenders allow LTV up to 140% | Leasehackr forum (2025) | Community observation — not an authoritative lender statement |
| EV depreciation default of 21% per year | US Finance Calculators (2026) | Estimate — verify against current market data before relying on it |
| State sales tax rates and trade-in tax credit rules | State departments of revenue | Requires verification — confirm for your state before finalizing a deal |
| State EV rebate programs | State energy offices | Requires verification — programs change and can be exhausted |
Last verified: November 2026. Tax credit status and lender LTV guidance are the most time-sensitive items on this page and should be rechecked before you sign a deal.
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Calculate your EV loan payment with trade-in and negative equity →
- CFPB: Should I trade in my car if it’s not paid off? — Official Consumer Financial Protection Bureau guidance explaining negative equity, rolling a balance into a new loan, and the steps to take before trading in an underwater vehicle.
- CFPB: Negative Equity Findings from the Auto Finance Data Pilot — Research report with data on how negative equity is financed and the consumer risks associated with rolling an existing loan balance into a new auto loan.
- IRS: Treasury and IRS issue FAQs on the accelerated termination of clean vehicle credits — Official IRS Fact Sheet 2025-05 confirming the termination dates for Sections 30D, 25E, and 45W under the One Big Beautiful Bill Act.
- Congressional Research Service (IF12570): Clean Vehicle Tax Credit Transfers to Car Dealers — CRS In Focus report explaining the July 2025 repeal of the clean vehicle credit and the September 30, 2025 acquisition deadline.
- Congressional Research Service (IF12600): Clean Vehicle Tax Credits — CRS report summarizing each clean vehicle credit and discussing the repeal under the FY2025 reconciliation law.