Home Equity Loan Fixed? How Rates and Payments Work

A home equity loan usually has a fixed interest rate and fixed monthly principal-and-interest payments for the agreed repayment term, but the lender’s specific offer controls. This calculator estimates the payment and total interest on a fixed-rate home equity loan from the amount borrowed, APR, and term; enter the figures from a lender’s disclosure to see the results.

Formula

The calculator treats the loan as a fixed-rate, fully amortizing loan with monthly payments. It first converts the annual percentage rate (APR) to a monthly rate and the term in years to a number of monthly payments.

• p = amount borrowed, in dollars.
• apr = annual percentage rate, entered as a percentage per year.
• r = monthly interest rate, calculated as apr ÷ 1,200.
• n = total number of payments, calculated as years × 12.
• pmt = monthly principal-and-interest payment, in dollars, rounded to the nearest cent.
• int = estimated total interest over the full term, in dollars.

The payment formula is pmt = round[p × r ÷ (1 − (1 + r)⁻ⁿ), 2]. Total interest is int = pmt × n − p. Because the total uses the rounded monthly payment, it reflects payment rounding to cents across the modeled term.

Worked Example

Using the calculator’s default values—$20,000 borrowed, an 8% APR, and a five-year term:

1. Monthly rate: 8 ÷ 1,200 = 0.0066667.
2. Number of payments: 5 × 12 = 60.
3. Payment before rounding: $20,000 × 0.0066667 ÷ [1 − (1 + 0.0066667)⁻⁶⁰] ≈ $405.53.
4. Monthly payment rounded to cents: $405.53.
5. Total of modeled payments: $405.53 × 60 = $24,331.80.
6. Total interest: $24,331.80 − $20,000 = $4,331.80.

Assumptions

• The interest rate stays fixed for the entire term.
• Payments are equal, monthly, and made at the end of each monthly period.
• Interest is modeled monthly using APR ÷ 12; the lender’s exact calculation and payment schedule may differ.
• The calculation excludes origination and other fees, taxes, insurance, escrow, and any costs not entered as loan principal.
• It assumes the loan is fully repaid through the scheduled payments, with no missed payments, extra payments, or payoff before the end of the term.

What “Fixed” Means for a Home Equity Loan

A home equity loan is generally a lump-sum loan secured by the borrower’s home. “Fixed” ordinarily describes the interest rate: it does not change during the stated fixed-rate period. With a fully amortizing fixed-rate loan, the scheduled principal-and-interest payment is also level, so the amount due for those two components is predictable under the contract.

That does not necessarily mean every part of the borrower’s housing costs stays unchanged. Property-related bills, insurance, or account charges are not included in this calculator and may change independently. A lender may also have fees or other contract terms that affect the actual amount financed or payment. Check the loan documents for the rate type, payment schedule, and any charges.

Home Equity Loan Versus HELOC

A home equity loan and a home equity line of credit (HELOC) both use home equity as collateral, but they are structured differently. A home equity loan typically provides a single amount up front and may have a fixed rate. A HELOC is a revolving credit line that lets the borrower draw funds under the agreement; its rate may be variable, though terms vary by lender and product.

Do not assume a HELOC’s payment will follow this calculator’s estimate. A changing rate, changing balance, draw period, or interest-only payment arrangement can make its payment pattern different. For either product, the home is collateral, so failure to meet contractual obligations can put the home at risk. Read the agreement carefully and ask the lender how its rate and payment can change.

How to Use the Estimate and Check Costs

Enter the proposed amount, APR, and term shown in a lender’s materials. The payment is an estimate of monthly principal and interest, not a quote or a complete monthly housing budget. Total interest assumes every scheduled payment is made as modeled and the rate remains fixed.

• Compare like with like: use the same loan amount and repayment term when examining different offers, and check whether the quoted APR and rate are defined on the same basis.
• Include fees in your review: ask whether costs are paid separately, added to the balance, or otherwise handled. If a fee is financed, the actual amount borrowed may exceed the cash received.
• Check the schedule: confirm the first payment date, payment frequency, final payment, and whether the contract permits extra payments or charges for particular actions.
• Use the disclosure for exact figures: this simplified calculation does not model lender-specific rounding, fees, rate adjustments, or every contract provision.

A common misconception is that a fixed rate means a fixed total cost under every circumstance. It fixes the interest rate only as described in the agreement; early payoff, late payments, fees, or other contract terms can change what is ultimately paid. Likewise, the calculator’s “total interest” is not the total cost of borrowing when fees or other charges apply.

Frequently Asked Questions

Are home equity loan rates fixed?
Many home equity loans are offered with fixed rates, but not every product or offer has identical terms. Confirm in the lender’s documents whether the rate is fixed for the entire term or can change.

Does a fixed-rate home equity loan payment change?
For a fully amortizing fixed-rate loan with equal monthly payments, scheduled principal and interest generally stay level. Fees, late charges, or other amounts outside the principal-and-interest payment can affect what is due.

Is a home equity loan fixed or variable?
It depends on the specific loan agreement. A home equity loan commonly has a fixed rate, while a HELOC may have a variable rate, but borrowers should verify the terms rather than rely on the product name.

Can the payment change if the rate is fixed?
The scheduled principal-and-interest payment is generally level under the assumptions used here. The amount owed can differ if the contract applies charges, payments are missed, or the loan terms include conditions not represented by this calculator.

Does this estimate include closing costs?
No. It calculates modeled principal-and-interest payments and interest from the entered loan amount, APR, and term. Ask the lender for the itemized fees and the complete payment details.

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

Related

• DCU Home Equity Loan Rates and Payment Calculator
• Equity Finance Loan Rates and Payment Calculator
• Cost of Equity Calculator: CAPM Formula and Example

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 | $ | round(p * (apr / 1200) / (1 - (1 + apr / 1200) ^ -(yrs * 12)), 2) | 2
out int | Total interest | $ | pmt * yrs * 12 - p | 2