Compare the true cost of financing a car with an auto loan versus a home equity loan. Enter your vehicle price, down payment, loan terms, and interest rates for both options — and see a side-by-side breakdown of monthly payments, total interest paid, and total cost for each. Keep in mind that home equity loans put your home at risk, so weigh the numbers carefully before deciding. Also try the calculate Balloon Payment (Auto) Balloon Payment Amount.
Results
Total Interest Savings (Lower Option)
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Auto Loan Monthly Payment
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Auto Loan Total Interest
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Auto Loan Total Cost
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Home Equity Monthly Payment
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Home Equity Total Interest
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Home Equity Total Cost
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Lower Total Cost Option
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Auto Loan vs Home Equity Loan — Cost Comparison
Results Table
Auto Loan vs Home Equity Calculator: Are you weighing the smartest way to finance your next car or vehicle purchase? Knowing whether an auto loan or a home equity loan will deliver the best savings can have a major impact on your budget, credit, and even your long-term personal finance plans. The results from this auto loan vs home equity calculator reveal the differences in cost, risk, and flexibility—helping you figure out which option aligns with your goals so you can save money both today and in the years ahead.
Making the Choice with the Auto Loan vs Home Equity Calculator
Understanding Interest Rates, Terms, and Lending Requirements Using an Auto Loan vs Home Equity Calculator
Choosing between an auto loan and a home equity loan for your car purchase means looking at more than just the monthly payment. Each type of borrowing has unique structures and risks:
Auto loan: Common choice for vehicle financing, typically offered by a bank, credit union, or dealer. Interest rates depend on your borrowing profile and the terms generally range from 24 to 84 months (number of months).
Home equity loan: Secured against your house’s value (ownership stake), with potential for lower interest rates and extended terms (often 5-15 years). However, you put your property at risk and may pay extra fees or closing costs.
Associated Fees, Title Transfer, and Closing Costs
Don’t overlook the comprehensive costs tied to each type of borrowing:
Auto loan fees: Title transfer, application, and fees due at delivery.
Home equity loan closing costs: May include appraiser fees, title insurance, points paid, and various miscellaneous fees.
Sales tax deduction is typically added to the amount you pay for your vehicle (full acquisition price), though in some regions, trading in your old ride reduces your sales tax exposure. Always consult your state’s rules around purchase price less trade-in and sales tax break, as the difference between locations can be significant. Many states allow you to reduce your levies owed by applying the trade-in value toward your new vehicle.
Calculating Your Monthly Payment and Total Loan Costs
Your monthly payment is a key factor, but don’t let it be the only one. Here’s how the auto loan calculator and home equity loan calculator determine this critical figure:
Auto Loan Formula (for standard amortizing loans):
$$M = P \times \frac{r(1+r)^{n}}{(1+r)^{n}-1}$$ Where:
Home Equity Loan Formula (same structure, but usually higher amounts and longer terms):
$$M_{HE} = P_{HE} \times \frac{r_{HE}(1+r_{HE})^{n_{HE}}}{(1+r_{HE})^{n_{HE}}-1}$$ Where bracketed subscripts refer to the property-backed debt’s terms.
Your cost will also factor in closing costs, cash down (or down payment), sales tax deduction, manufacturer rebates, and trade allowance from your old ride. This tool accounts for all these moving parts—helping you compare the costs of each option for your personal situation and ultimately save money if possible.
For a complete picture, also consider your balance over time, any outstanding balance on a trade-in, and how these affect the funds you will need to borrow.
Using the Home Equity vs Auto Loan Calculator for Real-Life Scenarios
Key Inputs Explained: From Purchase Price to Interest Rate
The home equity vs auto loan calculator requires you to enter specifics that impact both your monthly payment and your potential financial benefits:
Acquisition price (the total price, without taxes)
Trade-in value and outstanding balance on your old car
Rebates, cash down, or manufacturer discounts reducing your borrowing needs
Sales tax rate for your region
Auto loan interest rate and home equity interest rate
Term (months to pay off the debt today)
Your input details determine your required capital (“loan you will need”), accrued interest over time, and monthly payment for each option. This can help you determine how to finance your next vehicle responsibly and efficiently for your needs, whether you plan to buy a car outright or finance it.
Important Assumptions in the Calculator
This analysis tool is designed for independent use and comparison, but it is critical to be aware of its underlying assumptions:
No sales tax deduction for trade-ins in certain areas; in some regions, you pay government charges on the entire full acquisition price.
Home equity borrowing interest is usually not an itemized deduction on your returns as of recent law changes.
Examples are hypothetical for illustrative purposes only. Results may vary based on your individual circumstances.
Fees included: title transfer, appraiser costs, points, miscellaneous fees applicable to the mortgage-based option only.
No refinancing fees built in for the car loan.
Example Scenarios: Three Common Cases in Auto vs Home Equity Financing
See how the difference between an auto loan and a mortgage-backed advance plays out with real numbers. You can use the calculator to estimate your expenses today and get a side-by-side view:
Result: With an auto loan at 6%, monthly payment is $$M = 25,000 \times \frac{0.005(1+0.005)^{60}}{(1+0.005)^{60}-1} \approx $483$$.
With a property-backed loan at 4.5% for 120 months, monthly payment is $$M = 25,000 \times \frac{0.00375(1+0.00375)^{120}}{(1+0.00375)^{120}-1} \approx $260$$.
Net trade allowance: $2,000 towards down payment. Sales tax rate: 7%.
If your state allows a sales tax deduction for trade-ins, government charges are calculated on $20,000: $$\text{Sales tax} = 20,000 \times 7\% = $1,400$$.
Monthly payment adjusts downward due to lower balance and final cost.
Using Factory Rebates and Additional Choices:
Manufacturer rebates: $1,500. Extra choices (upgrades): $2,500; destination charges: $900.
Final purchase price less trade-in: $30,000 + $2,500 + $900 - $1,500 = $31,900.
Each example illustrates how changing your cash down, adding rebates, or factoring sales tax and fees can impact your monthly payment and the overall outlay—helping you figure out the most economical solution among additional options for funding or to buy a car.
What to Do Next: Comparing Loan Offers and Seeking Professional Guidance
Comparing Offers From Auto Loan and Home Equity Lenders
Once you’ve used this tool to analyze your options, it’s time to compare offers from various lenders:
Get rate quotes from your branch, credit union, and online sources
Ask about any promotional rates or extra charges for optional protection products
Use interactive tools to compare lenders’ true costs side-by-side and research additional options
Consulting with Financial Advisors and Qualified Experts
Investment advice from knowledgeable professionals can help you choose between a vehicle loan and a property-backed line of credit by considering your future plans, existing debt or mortgage, income taxes, and other aspects of your financial landscape.
Consider seeking personalized advice from a financial advisor or local depository institution
Discuss the impact on your retirement goals and cash flow
Ask about your applicability for certain rates, and the accuracy of calculator results for your unique circumstances
Review further resources such as refinancing, combining borrowing for a vehicle with other needs, or leveraging special tools for members of a credit union
For more tips and self-help tools, try it online with our other calculators or explore links to expert content from trusted institutions, professional organizations, and investment guides. Always double-check the details if your situation involves unusual government charges, business ownership, or protection needs.
Should I use a home equity loan to buy a car?
A home equity loan can offer a lower interest rate than a traditional auto loan, which may reduce your monthly payment and total interest paid. However, using your home as collateral means you risk foreclosure if you can't make payments. It's best to compare both options carefully, factoring in rate differences, loan terms, and the risk to your home. See also our RV Loan Calculator.
What is the main advantage of an auto loan over a home equity loan?
Auto loans are secured by the vehicle itself rather than your home, so your house is never at risk. They also typically close faster and involve less paperwork than home equity loans. For buyers who value keeping their home equity intact, an auto loan is generally the safer financing route.
Are home equity loan interest payments tax deductible for a car purchase?
Generally, no. The Tax Cuts and Jobs Act of 2017 limited the home equity interest deduction to loans used to buy, build, or substantially improve the home securing the loan. Using a home equity loan to purchase a vehicle typically does not qualify for a tax deduction. Always consult a qualified tax advisor for guidance specific to your situation.
What loan term should I choose for financing a car?
Shorter loan terms (24–48 months) mean higher monthly payments but significantly less total interest paid. Longer terms (60–84 months) lower your monthly payment but increase the total cost of the loan. Most financial experts recommend the shortest term whose payments you can comfortably afford. You might also find our Lease vs Buy Car Calculator useful.
How is the monthly payment calculated for each loan type?
Both loans use the standard amortization formula: M = P × [r(1+r)^n] / [(1+r)^n − 1], where P is the loan principal (vehicle price minus down payment), r is the monthly interest rate, and n is the number of monthly payments. The calculator applies this formula to both your auto loan and home equity loan inputs.
What are the risks of using home equity to finance a car?
Your home serves as collateral, so missing payments could result in foreclosure — a far more serious consequence than a vehicle repossession. Cars also depreciate quickly, which means you could owe more on your home equity loan than the car is worth if you need to sell. This mismatch between asset value and loan balance is a significant financial risk.
Does a home equity loan affect my ability to refinance or sell my home?
Yes. A home equity loan adds to your total mortgage debt and reduces your available equity. This can affect your loan-to-value ratio if you want to refinance your primary mortgage. When selling your home, the home equity loan balance must be paid off at closing, which reduces your net proceeds.
Which loan type typically has a lower interest rate?
Home equity loans generally carry lower interest rates than auto loans because they are secured by real estate, which lenders consider lower-risk collateral than a depreciating vehicle. However, the rate advantage can be offset by longer repayment terms and the potential loss of a tax deduction, so it's important to compare total costs rather than rates alone.