10 Year Home Equity Loan Payment Calculator

Why a ten year term changes the math

A ten year home equity loan puts the balance on 120 monthly payments. Fewer payments means each one is larger, and the interest has less time to compound against an unpaid balance. Both effects come from the same formula, and the second one is much bigger than most borrowers expect.

Put 50,000 dollars at 8.50 percent. Over ten years the payment is 619.93 and the total interest is 24,391.41. Over thirty years the payment falls to 384.46 and the interest climbs to 88,404.43. The monthly saving is 235.47, and the price of that saving is 64,013.02 in extra interest.

Read that as a rate of exchange. Every 235.47 saved each month costs 64,013.02 over the life of the loan. Nothing else changes, since the amount and the rate are identical in both rows.

Equity builds faster too. After five years of the ten year schedule the balance is down to 30,216.05, so 19,783.95 of principal has been repaid. After five years of the thirty year schedule the balance is still 47,745.13, which means only 2,254.87 of principal is gone. A short term converts a monthly payment into ownership at a much higher rate.

Term menus differ by lender. Five, ten, fifteen, twenty and thirty year options exist, and a ten year product is not on every rate sheet. Ask for the shortest term you can carry rather than the longest one you qualify for.

The amortization formula behind the payment

Four variables, one line

Every number on this page comes from one equation:

M = P x [ r(1 + r)^n ] / [ (1 + r)^n - 1 ]

M is the monthly payment, P is the amount borrowed, r is the annual rate divided by 12 and by 100, and n is the term in months. A ten year loan has n of 120. A rate of 8.50 percent gives r of 0.0070833, and 50,000 x 0.0070833 = 354.17 is the interest owed in the first month.

The payment is linear in P, so doubling the amount doubles the payment. It is not linear in r or n. One half of a percentage point added to a thirty year loan at 50,000 moves the payment by 17.85, while the same half point on the ten year loan moves it by 13.45. Longer terms carry more rate risk in dollars, which is one reason a short fixed term is easier to budget around.

If the rate is zero the interest term drops out and the payment is P divided by n, which is 416.67 on 50,000 over 120 months. Lenders rarely write a zero rate second mortgage, but the case shows the shape of the formula.

Two details decide whether a lender quote matches this page. The first is rounding: a lender collects a payment rounded to cents, so the last payment is usually a little smaller than the rest. The second is the rate itself. The note rate drives this formula, while the APR folds in fees and answers a different question.

Worked example: 50,000 dollars at 8.50 percent for 10 years

Take 50,000 at 8.50 percent over 120 months. The rate is illustrative, chosen to keep the arithmetic readable; a lender sets its own price and the calculator accepts whatever you type.

The monthly rate is 0.085 divided by 12, which is 0.0070833, and n is 120. The formula returns 619.93 a month.

The first month sends 354.17 to interest and 265.76 to principal, so the balance falls to 49,734.24. By the final payment the split has flipped: interest is 4.36 and principal is 615.57. The payment itself never moves.

Across the term 619.93 x 120 = 74,391.60, while the unrounded payment times 120 gives 74,391.41. Rounding the monthly figure to cents adds 19 cents over ten years, which is small enough to ignore in a budget but large enough to explain why a servicer statement and a hand calculation can differ by a few cents.

Interest is the total minus the principal: 74,391.41 - 50,000 = 24,391.41. That is 32.8 percent of every dollar paid, against 63.9 percent on the same amount over thirty years.

Worked example: 100,000 dollars at 7.75 percent for 10 years

A larger loan at a lower rate shows how the amount and the rate pull in opposite directions. Borrow 100,000 at 7.75 percent for 120 months and the payment is 1,200.11.

Doubling the amount while dropping the rate by 0.75 points raises the payment from 619.93 to 1,200.11, so the payment is roughly 1.94 times the smaller loan, not 2 times. The interest share falls from 32.8 to 30.6 percent, which shows that the rate matters more than the amount for the cost of borrowing.

The thirty year version of the same 100,000 at 7.75 percent costs 716.41 a month and 157,908.41 in interest. Stretching the term saves 483.70 a month and adds 113,895.65 of interest. A borrower who takes the thirty year payment and invests the difference would need a return above 7.75 percent after tax to come out ahead, and the loan interest is charged with certainty.

Note what a 1,200.11 payment does to a household budget. Lenders compare it with gross monthly income. A 1,200.11 payment takes 16.0 percent of a 7,500 dollar monthly income, while the 619.93 payment in the first example takes 8.3 percent.

Ten years against 15, 20 and 30 on the same 50,000

The amount and the rate stay at 50,000 and 8.50 percent, and only the term moves. Each row uses the same formula.

The steps between rows shrink while the interest gaps grow. Moving from 10 to 15 years frees 127.56 a month and adds 14,235.15 of interest. Moving from 15 to 20 frees 58.46 a month and adds 15,512.23. Moving from 20 to 30 frees 49.45 a month and adds 34,265.64. The last step is the worst trade on the board: the smallest monthly relief for the largest interest increase.

That pattern is the practical argument for the ten year term. It sits at the steep end of the curve, where each dollar of monthly relief costs the most interest later. A borrower who can carry 619.93 gets the cheapest money in the table.

One caveat on affordability. A payment that fits this month may not fit after a job change, and a home equity loan is secured by the house. Keep the payment under a third of take-home pay, and keep an emergency fund outside the loan proceeds.

CLTV, DTI and what a lender checks before approving

The two ratios that decide the file

Equity is the appraised value minus every loan secured by the house. Lenders then compute the combined loan to value ratio, which puts all of the debt over the same value:

CLTV = (first mortgage balance + new home equity loan) / appraised value

A house appraises at 400,000 and the first mortgage balance is 250,000, so the equity is 150,000. Add a 60,000 home equity loan and total debt becomes 310,000. Divide by 400,000 and the CLTV is 77.5 percent, with 90,000 of equity left.

To test a cap you were quoted, multiply the value by the cap and subtract the first mortgage. At 80 percent, 400,000 x 0.80 = 320,000, and 320,000 - 250,000 = 70,000. At 85 percent, 400,000 x 0.85 = 340,000, and 340,000 - 250,000 = 90,000. The cap is set by the lender, not by federal rule, and it moves with credit score, property type and how the appraiser reads the market.

The second ratio is debt to income. Add the new payment to the first mortgage, property taxes, insurance, minimum card payments and any car loan, then divide by gross monthly income. A household earning 7,500 a month with a 1,650 first mortgage, a 619.93 second mortgage and a 350 car payment carries 2,619.93 of debt, a DTI of 34.9 percent. Housing alone is 2,269.93, or 30.3 percent.

Those figures sit inside the range many lenders accept for a second lien, but the cutoff is a credit policy decision, not a legal limit. A thin credit file, a self employed income year or a condominium with a high investor share can push a file out even when both ratios look fine.

Ten year home equity loan, HELOC or cash-out refinance

Three products, three payment shapes

All three borrow against the same asset, and they behave differently once the money is out. The Consumer Financial Protection Bureau draws the line between a loan and a line of credit in its comparison of a home equity loan and a HELOC.

A ten year home equity loan is the right shape for a known cost with a known finish, such as a roof, a septic replacement or a kitchen. The payment is fixed and the loan ends on a date you can put on a calendar.

A HELOC suits a project whose total is unknown, and its payment moves with the index, so this calculator cannot price it: the rate would have to be re-entered at every reset. A cash-out refinance replaces the first mortgage, which helps when that rate is above today's market and hurts when it is below, because the replacement loan reprices the entire balance, not just the cash taken out.

Watch the closing cost arithmetic on a small second loan. A 60,000 loan with 2,500 of costs is paying 4.2 percent of the principal up front, which can wipe out a rate advantage in the first two years.

Tax rules, the three day cancellation right, and extra payments

What the payment does not tell you

Interest deductibility. IRS Publication 936 for tax year 2025 allows a deduction for mortgage interest only when the loan is secured by a qualified home and you itemize on Schedule A. Interest on home equity money is deductible only when the funds buy, build or substantially improve the home that secures the loan. Spend the proceeds on a car or a credit card balance and the interest is personal interest, which is not deductible. For debt taken out after December 15, 2017, the home acquisition debt limit is 750,000, or 375,000 for a married couple filing separately. The IRS Publication 936 page carries the current text.

Right of rescission. A home equity loan is a non purchase money mortgage, so the three day cancellation right applies. The Consumer Financial Protection Bureau explains the mechanics in its answer on the right of rescission: three business days, counted from the last of signing the contract, receiving the Truth in Lending disclosures, and receiving two copies of the cancellation notice. Saturdays count as business days, Sundays and federal holidays do not, and the notice has to be in writing. Money paid at closing must be returned within 20 calendar days after the lender receives the notice.

Closing costs added to principal. Roll 3,000 of costs into the 50,000 loan and the principal becomes 53,000. At 8.50 percent over 120 months the payment rises to 657.12 and total interest to 25,854.90, which is 1,463.49 more than the base case. Paying the costs in cash keeps the loan smaller.

Extra principal. The 619.93 payment is a minimum, not a cap. Add 100 a month and the loan clears in 96 months instead of 120, with 19,069.01 of interest instead of 24,391.41, a saving of 5,322.40. Ask the servicer to apply the extra amount to principal, since some processors hold it as a credit toward the next payment instead.

What is not in the number. Property taxes, homeowners insurance, HOA dues, the appraisal fee and any prepayment penalty sit outside this payment. A home equity loan rarely escrows taxes and insurance, so those bills keep arriving on their own schedule. The figure here is an estimate for a fixed rate loan with equal payments, not a loan offer, and it cannot price a variable rate or a balloon.