5-Year Refinance Rates: Estimate Your Monthly Payment

A 5-year refinance rate is the annual interest rate on a refinanced loan repaid over 60 monthly payments; there is no single rate that applies to every borrower or loan. Enter a loan balance and the APR quoted by a lender to estimate the monthly principal-and-interest payment and total interest over five years.

Formula

The calculator uses the standard fixed-payment amortization formula. Monthly payment = principal × monthly rate ÷ [1 − (1 + monthly rate)^{−number of payments}]. In symbols, payment = P × r ÷ [1 − (1 + r)⁻ⁿ], where:

• P is the amount refinanced, in dollars.
• APR is the annual percentage rate entered as a percent per year.
• r is the monthly rate as a decimal: APR ÷ 1200.
• n is the number of monthly payments: years × 12. For five years, n = 60.

Total interest is the rounded monthly payment multiplied by the number of payments, minus the original principal: interest = payment × n − P. The calculator rounds the payment to cents before calculating interest, matching the way a payment amount is normally expressed. Actual lender calculations can differ because of fees, payment dates, rounding methods, and loan terms.

Worked Example

Using the defaults—$20,000, an 8% APR, and five years—the monthly rate is 8 ÷ 1200 = 0.0066667, and the number of payments is 5 × 12 = 60.

Payment = 20,000 × 0.0066667 ÷ [1 − (1 + 0.0066667)⁻⁶⁰] = $405.53 per month, rounded to the nearest cent. Total of payments = $405.53 × 60 = $24,331.80. Estimated interest = $24,331.80 − $20,000 = $4,331.80.

Assumptions

• The interest rate remains fixed for the full term.
• Payments are equal, made monthly, with the first payment one month after the loan begins.
• Interest is calculated monthly using APR divided by 12.
• The estimate excludes fees, taxes, insurance, PMI, escrow, and any charges rolled into the refinanced balance.

What a 5-Year Refinance Rate Means

“Five-year refinance rate” can refer to two different things: the interest rate offered on a refinanced loan with a five-year repayment term, or a loan whose rate is fixed for five years. Those are not necessarily the same. This calculator treats five years as the repayment term, with a fixed APR and 60 payments. If a loan’s rate is fixed for only part of its life and later adjusts, this fixed-rate estimate does not model the later changes.

Refinancing generally means replacing an existing debt with a new loan. The new balance may be the amount needed to pay off the old loan, plus any fees or other amounts included in the new borrowing. The new contract sets its own rate, payment schedule, and costs. A five-year term means the modeled principal is fully repaid through payments over 60 months, assuming payments are made as scheduled and the terms match the formula.

How to Use the Estimate

1. Enter the principal amount being refinanced. Use the proposed new loan balance, not automatically the original amount borrowed.
2. Enter the APR supplied for the specific loan and term. Do not treat the example rate as a market quote.
3. Set the term to five years, or change it if you are comparing another repayment period.
4. Read the monthly payment and total interest as estimates, then compare them with the lender’s written loan disclosures.

For example, a $20,000 balance at the default 8% APR produces a $405.53 monthly payment under the model. If a lender includes $500 of costs in the new balance, entering $20,500 instead will raise the estimated payment and interest. The calculator does not decide whether costs are paid upfront or added to the loan; enter only the principal amount relevant to the scenario you want to estimate.

Comparing Terms, Rates, and Costs

A shorter term usually requires larger monthly payments than a longer term for the same balance and APR, because the principal is repaid sooner. It also means fewer months for interest to accrue. A lower APR reduces the formula’s interest charge, while a higher principal increases both the payment and the interest paid. These are mathematical relationships, not a prediction of the rate or terms any borrower will receive.

A payment-only comparison can miss important costs. Refinancing may involve charges that are paid separately or incorporated into the new balance; the calculator has no fee input. If you want to see how financed costs affect the basic payment estimate, include them in the principal input. For a fuller comparison, obtain the complete costs and payment schedule for both the existing loan and the proposed replacement. Consider the time remaining on the current loan as well as the new term: a lower monthly payment alone does not show total cost or how quickly debt is repaid.

Limits and Common Mistakes

• Confusing APR and a monthly rate: Enter an annual APR as a percentage, such as 8, not 0.08 or 0.00667. The calculator converts it to a monthly decimal.
• Using the wrong balance: The amount borrowed at refinancing may differ from the current displayed balance if payoff amounts or financed charges differ.
• Assuming every five-year rate is fixed for five years: The estimate assumes a fixed rate and does not represent a product that can adjust later.
• Ignoring extra payments: The formula assumes equal scheduled payments and no additional principal payments, missed payments, or payment changes.
• Treating the result as a quote: Lenders may calculate payments using contract-specific details and include costs not represented here.

The calculator is for general loan arithmetic, not a decision about whether to refinance. Rates, fees, and loan terms vary by offer and must be obtained from the lender; this page does not forecast rates, eligibility, or approval. The result is an estimate, and the lender’s disclosure gives the exact figures.

Frequently Asked Questions

What is the monthly payment on a five-year refinance?
It depends on the amount borrowed and APR. At the calculator’s example inputs of $20,000 and 8% APR, the estimated payment is $405.53 for 60 months, excluding costs not entered.

Is a five-year refinance rate the same as a five-year fixed rate?
No. A five-year repayment term describes how long payments are scheduled to run. A five-year fixed-rate period describes how long the interest rate stays fixed; the loan may continue after that period.

Does a five-year term mean exactly 60 payments?
This calculator assumes 60 monthly payments. A lender’s first payment date, final payment, or contract details can change the exact schedule.

Does refinancing include closing costs or other fees in this estimate?
No. The calculator excludes fees. If costs are added to the new loan, include them in the principal input for a rough payment estimate; ask the lender for the exact breakdown.

Can I use this to compare a five-year loan with a longer term?
Yes. Change the term input and compare the estimates using the same principal and APR. For a meaningful cost comparison, also use the actual rates, fees, and terms quoted for each option.

Related

• Debt Service Coverage Ratio (DSCR) Calculator
• Debt Service Coverage Ratio vs DTI: Key Differences
• Debt Service Coverage Ratio Calculator and Formula

in p | Loan amount | $ | 20000 | 1 | 100000000
in apr | Interest rate (APR) | % | 8 | 0.01 | 100
in yrs | Loan term | years | 5 | 0.0833 | 50
out pmt | Monthly payment | $ | p * (apr / 1200) / (1 - (1 + apr / 1200) ^ -(yrs * 12)) | 2
out int | Total interest | $ | pmt * yrs * 12 - p | 2