Payment Calculator
Quick answer
Enter target payment, APR, term; solve for principal. Try +/− 0.5% rate bands to bracket affordability.
For a related estimate, see Loan Calculator.
Explore further: Personal Loan Calculator · Monthly Payment Calculator
Inverse intuition
PV of an annuity: given payment P, rate r, and n periods, principal ≈ P × (1 − (1+r)^−n) / r (monthly r).
Explore further: Loan Payment Calculator · Apr Calculator
This intent is inverse: you know what you can pay each month and want to see how much principal that supports at a given rate and term. It’s different from forward payment calculators—stress that approval uses DTI and credit, not math alone.
How to use this calculator
- Rate sensitivity: Small rate changes move max principal a lot on long terms.
- Add escrows if comparing housing: For cars/personal, escrows are usually N/A.
- Buffer: Leave margin below max—lenders add reserves and stress tests.
Real-world examples
- Example: $350/mo max, 6.5% APR, 60 months → principal often mid $18k range (illustrative).
- Sensitivity check: Nudge the rate by about +0.5% and the principal by about −5%. If the payment, break-even, or target amount moves enough to change your decision, you are still on a steep part of the curve where small inputs matter.
Explore further: Auto Loan Calculator
What this means
Inverse affordability is rate-sensitive—small APR changes move max principal sharply on long terms.
FAQ
Is this a loan commitment?
No. Outputs are educational estimates. Final payments, APR, and fees come from your lender’s disclosures.
How accurate is this calculator?
It applies standard math to the inputs you enter. Real lenders, payroll rules, and rounding can differ—use results for planning and comparison, not as binding quotes.
Why might my result differ from another website?
Different assumptions (APR vs note rate, day-count, tax year, rounding mode, or unit definitions) shift outputs slightly. Align inputs with the same definitions when you compare.