Cash or Finance a Car? Compare With the Same Monthly Budget
A fair cash-versus-finance comparison should account for what you could save each month after a cash purchase.
In this guide
A fair cash-versus-finance comparison should account for what you could save each month after a cash purchase.
How to approach the decision
The financing path starts with more investable cash and makes loan payments. The cash path starts with less investable cash and deposits an amount equal to the avoided payment each month.
Worked example
| Input | Example |
|---|---|
| Vehicle price paid in cash ($) | $30,000.00 |
| Down payment if financed ($) | $6,000.00 |
| Annual loan note rate (%) | 6 |
| Loan term (months) | 60 |
| Hypothetical annual investment return (%) | 3 |
| Upfront financing-only fee ($) | $250.00 |
| Result | Estimate |
|---|---|
| Financing advantage at the end of the term | -$2,406.85 |
| Monthly loan payment | $463.99 |
| Financing path investment balance | $27,588.40 |
| Cash purchase path investment balance | $29,995.25 |
Assumes identical purchase price, fixed monthly installments, a constant hypothetical annual investment return compounded monthly, no taxes or trading costs, and end-of-month deposits equal to the avoided loan payment on the cash path. Returns can vary or be negative in practice. The tool models nonnegative return assumptions only.
What to verify
Use identical prices in both cases. If a rebate applies to only one offer, compare actual quotes separately because this worksheet keeps the vehicle price constant.
Run your numbers with the Auto Cash vs Finance Investment Calculator. For a second scenario, see Stress-Test the Investment Return Behind a Car Loan.
Further reading: CFPB auto loan guide.
Explore this topic further
Check your assumptions with these tools and related guides.
Try a relevant calculator
- Auto Cash vs Finance Investment Calculator — Compare buying a car in cash with financing and investing the cash you keep.
- Financed Car Deductible Reserve Calculator — Budget monthly car payments and premiums while building cash toward an insurance deductible.
- Car Rebate vs 0% Financing Calculator — Compare equal-term car financing offers: a cash rebate with interest versus a hypothetical zero-interest loan.
- Financed Car Mileage Budget Calculator — Estimate monthly car costs including fuel, insurance, maintenance and the financing payment.
Read related guides
Put the information to work
Compare the amount financed, written APR, term and optional products before focusing on the monthly payment.
This guide is general education, not personalized financial advice. Rates, limits and rules change; confirm current figures with the lender, issuer or agency before you act. See our financial disclaimer and affiliate disclosure.
