Five-Year Home Loan Comparison Calculator

This five-year home loan comparison calculator estimates the monthly principal-and-interest payment and total interest for a fixed-rate loan with a five-year term. Enter the loan amount, annual percentage rate (APR), and term; the results show the scheduled payment and interest using a standard monthly amortization formula.

Formula

The calculator uses the standard fixed-payment amortization formula. It first calculates a monthly payment, then multiplies that payment by the number of monthly installments and subtracts the starting principal to estimate total interest.

• Monthly payment: M = P × r / [1 − (1 + r)⁻ⁿ]
• Total interest: I = M × n − P
• Monthly rate: r = APR / 1,200
• Number of payments: n = years × 12

P is the amount borrowed in dollars; APR is the annual percentage rate entered as a percentage; r is the monthly rate as a decimal; n is the number of monthly payments; M is the monthly payment in dollars; and I is estimated total interest in dollars. For example, an APR of 8% becomes 0.08 / 12, or approximately 0.006667 per month. The calculator displays the payment rounded to cents, and its interest estimate uses that displayed payment multiplied by the scheduled number of months.

Worked Example

Using the calculator’s default inputs—$20,000 principal, 8% APR, and five years:

1. Convert the APR to a monthly rate: r = 8 / 1,200 = 0.0066667.
2. Convert the term to monthly payments: n = 5 × 12 = 60.
3. Substitute into the payment formula: M = 20,000 × 0.0066667 / [1 − (1.0066667)⁻⁶⁰].
4. The monthly payment is approximately $405.53.
5. Using the rounded payment, total scheduled payments are $405.53 × 60 = $24,331.80. Estimated interest is $24,331.80 − $20,000 = $4,331.80.

Assumptions

• The interest rate is fixed and unchanged throughout the term.
• Payments are made monthly, at the end of each payment period.
• Interest is calculated monthly using APR divided by 12.
• The calculation excludes fees, taxes, homeowners insurance, mortgage insurance, escrow, and other charges because they are not inputs.

What a Five-Year Term Means

A five-year term means the modeled balance is scheduled to be repaid through 60 monthly payments. It is not the same thing as a five-year fixed-rate period on a longer mortgage: a loan can have a payment schedule extending well beyond five years even if its rate is fixed only for an initial period. Check the loan’s stated amortization term and rate period before comparing figures.

Shorter repayment periods generally require larger scheduled payments than longer periods for the same principal and rate, because the balance must be repaid sooner. The interest total also depends on the APR and how payments are applied. A five-year calculation therefore describes only the specific principal, rate, term, and payment assumptions entered—not every cost or feature of a home loan.

How to Compare Home Loan Estimates

For a meaningful arithmetic comparison, enter the same loan amount and term for each offer, then use the APR provided for that specific offer. If the actual principal differs because of a down payment or amount financed, use the different principal only when that difference is intentional. Record the figures and assumptions alongside the results.

• Compare the same repayment term; a payment from a longer term is not directly comparable to one from a five-year payoff schedule.
• Use the lender’s quoted APR and confirm whether its payment illustration uses the same rate and term.
• Check the disclosed payment schedule and whether the rate is fixed for the whole modeled period.
• Review the lender’s itemized charges separately. This calculator has no inputs for fees, insurance, taxes, or escrow.
• Compare total payments and interest only when the underlying assumptions match; neither figure alone captures every loan cost.

APR and interest rate are related but not interchangeable in every quotation. APR is an annualized disclosure measure, while a loan’s periodic interest calculation may use a stated note rate and specific lender conventions. This simple calculator treats the entered APR as the annual rate for monthly amortization. If the lender provides a payment estimate based on a different rate input or method, its disclosure is the relevant source for exact figures.

Reading Results and Common Limitations

The monthly payment shown is principal and interest only under the assumptions above. A mortgage’s full monthly housing payment can include other components, so the calculator’s payment should not be interpreted as the complete amount due. Likewise, total interest is an estimate based on the rounded monthly payment and a full sequence of scheduled payments; actual account calculations may reflect payment dates, rounding, rate conventions, or other contract terms.

A common misconception is that a five-year home loan comparison necessarily compares five-year fixed-rate mortgages. Here, five years is the full modeled repayment term. If you are comparing loans with a longer amortization schedule, use a calculator designed for that term and any applicable rate changes; do not treat this result as a forecast of a longer loan’s balance or cost.

Enter APR as a percentage, such as 8 for 8%, not as 0.08. Enter the amount borrowed rather than a home’s purchase price unless the entire purchase price is being financed. Small differences in inputs can change the result, and rounding means independently calculated figures may vary by a few cents. The formula also assumes level payments; it does not model extra payments, missed payments, a changing rate, or early payoff.

Frequently Asked Questions

What is the monthly payment on a five-year home loan?
The payment depends on the amount borrowed and APR. Enter those values in the calculator to estimate a fixed monthly principal-and-interest payment over 60 months.

Does this calculator compare five-year fixed mortgage rates?
No. It models a loan that is fully repaid over five years at a fixed input rate. A five-year fixed-rate period on a longer loan is a different arrangement.

Does the result include property taxes and insurance?
No. The calculation includes only modeled principal and interest. Taxes, insurance, mortgage insurance, escrow, and fees are not included.

Why might a lender’s payment differ?
The lender may use a different rate, payment timing, rounding method, financed costs, or loan structure. The calculator also omits charges and other payment components; consult the lender’s disclosure for its exact figures.

Can I use this for a variable-rate home loan?
Only as a simplified estimate for a period when the entered rate applies. The calculation assumes the rate stays fixed for all 60 payments and cannot project future rate changes.

This result is an estimate for educational purposes, and the lender’s disclosure gives the exact figures.

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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