A 100K home equity loan payment depends on two things you choose or negotiate: the rate and the term. At 8% over 15 years, $100,000 costs $956 a month. Stretch it to 30 years and it drops to $734. Shorten it to 10 and it climbs to $1,213. A HELOC with an interest-only draw period asks for $667 a month at the same 8%, and that number changes when the rate does.
Here’s what you need to know first. The table below is arithmetic, not a rate sheet. We computed every payment from the standard formulas, and the rates run from 6% to 12% so you can find the row nearest the offer you actually have. No lender’s rate appears in it.
The short answer: For $100,000 at a fixed rate, the monthly payment runs from $600 (30 years at 6%) to $2,224 (5 years at 12%). Pick your rate and term in the first table. If your lender quotes interest-only on a HELOC, use the second table, and remember that the payment steps up when the draw period ends.
The two formulas
Two formulas cover nearly every payment you’ll be quoted. In both, P is the amount you owe, r is the annual rate divided by 12, and n is the number of monthly payments.
| Payment type | Formula | Where it applies |
|---|---|---|
| Fixed-rate loan, paid down to zero | Payment = P × r × (1 + r)n ÷ ((1 + r)n minus 1) | A home equity loan, or a HELOC in its repayment period |
| Interest only | Payment = P × APR ÷ 12 | A HELOC’s draw period, when the lender asks for interest only |
This is the standard amortization formula. n is the term in years times 12.
A check you can run on a calculator: $100,000 at 8% over 15 years. Here r = 0.08 ÷ 12 = 0.0066667 and n = 180. Raise 1.0066667 to the 180th power and you get 3.3069. The payment is 100,000 × 0.0066667 × 3.3069 ÷ (3.3069 minus 1) = $955.65, which the table rounds to $956. Interest only at the same rate is 100,000 × 0.08 ÷ 12 = $666.67.
Payment on a 100K home equity loan
Each cell is the monthly payment on $100,000 borrowed at a fixed rate and paid off in equal payments over the term. Find your rate across the top and your term down the side.
| Term | 6% | 7% | 8% | 9% | 10% | 11% | 12% |
|---|---|---|---|---|---|---|---|
| 5 years | $1,933 | $1,980 | $2,028 | $2,076 | $2,125 | $2,174 | $2,224 |
| 10 years | $1,110 | $1,161 | $1,213 | $1,267 | $1,322 | $1,378 | $1,435 |
| 15 years | $844 | $899 | $956 | $1,014 | $1,075 | $1,137 | $1,200 |
| 20 years | $716 | $775 | $836 | $900 | $965 | $1,032 | $1,101 |
| 30 years | $600 | $665 | $734 | $805 | $878 | $952 | $1,029 |
Rounded to the nearest dollar. The rates are examples that span a plausible range, not any lender’s offer. Closing costs, origination charges, taxes and insurance aren’t in the payment.
Find your row. Then check what you can live with.
Two things jump out. Moving from 15 years to 30 at 8% cuts the payment by $222 a month. And a point of rate matters less than you might expect: at 15 years, each point between 6% and 12% adds roughly $55 to $63 a month.
What a shorter term really saves
The long term looks cheap monthly and costs the most overall. Here’s $100,000 at 8% across every term.
| Term | Monthly payment | Total paid | Total interest |
|---|---|---|---|
| 5 years | $2,028 | $121,658 | $21,658 |
| 10 years | $1,213 | $145,593 | $45,593 |
| 15 years | $956 | $172,017 | $72,017 |
| 20 years | $836 | $200,746 | $100,746 |
| 30 years | $734 | $264,155 | $164,155 |
Example rate of 8%. Totals use the unrounded payment times the number of payments, rounded to the nearest dollar.
Stretching from 10 years to 30 saves $479 a month and adds $118,562 of interest. That trade can be right if the lower payment is what keeps you out of trouble.
Just see it for what it is.
Payment on a 100K HELOC
A HELOC works in two stages. The CFPB describes a draw period, which might last about 10 years, when you can borrow up to your limit and many plans ask for minimum monthly payments based on your balance. Then comes a repayment period, often 10 or 20 years, when you can no longer borrow. The CFPB says payments in that stage are often much higher. The FTC adds that during the draw period you may pay only interest.
Interest only on $100,000 is simple: the APR times $100,000, divided by 12. Every percentage point is $83.33 a month, and every quarter point is $20.83.
| APR | Interest only, per month | Over 12 months |
|---|---|---|
| 6% | $500 | $6,000 |
| 7% | $583 | $6,996 |
| 8% | $667 | $8,004 |
| 9% | $750 | $9,000 |
| 10% | $833 | $9,996 |
| 11% | $917 | $11,004 |
| 12% | $1,000 | $12,000 |
Assumes the full $100,000 is drawn and stays drawn. Rounded to the nearest dollar.
Then the repayment period starts. Say you draw all $100,000, pay interest only for 10 years, and then repay over 20 years at the same rate. The payment doesn’t stay put:
| APR (held constant) | Draw period, interest only | Repayment period, 20 years | Step up | Total paid over 30 years |
|---|---|---|---|---|
| 7% | $583 | $775 | $192 | $256,072 |
| 8% | $667 | $836 | $170 | $280,746 |
| 9% | $750 | $900 | $150 | $305,934 |
| 10% | $833 | $965 | $132 | $331,605 |
120 interest-only payments, then 240 equal payments that pay the $100,000 down to zero. It assumes the rate never changes and nothing is repaid during the draw period. Real variable-rate lines don’t hold still.
Notice the shape. The interest-only stage is the cheaper monthly number, but nothing has come off the $100,000 by year 10, and the total paid over 30 years is higher than a 30-year fixed loan at the same rate. The CFPB warns that some borrowers must repay the full amount when the repayment stage starts.
When the HELOC rate moves
Most HELOCs have a variable rate, so the payment can change from month to month. Under Regulation Z (12 CFR 1026.40), a variable APR has to be based on an index that’s available to the public and outside the lender’s control, and the disclosures explain how the rate is set, for example by adding a margin to that index. Ask your lender which index and which margin.
Ask which index, and ask which margin.
For a sense of scale, we used the Federal Reserve’s bank prime loan rate as a stand-in for an index. The Fed’s H.15 release, dated October 9, 2026, lists it at 7.00% for each date shown, October 2 to 8. A lender’s line may use a different index, and the margins below are our assumptions, not offers.
| Assumed margin over 7.00% | APR | Interest only, per month | 20-year repayment payment |
|---|---|---|---|
| None | 7.00% | $583.33 | $775.30 |
| 1 point | 8.00% | $666.67 | $836.44 |
| 2 points | 9.00% | $750.00 | $899.73 |
On $100,000. The prime rate figure is the Federal Reserve’s, read October 13, 2026. The margins are our assumptions, for illustration. A 20-year repayment is one example of a repayment period.
If the index rises a full point, that adds $83.33 to the interest-only payment on $100,000. If it falls, the payment falls by the same amount. Some plans let you convert part of the balance to a fixed rate, which the CFPB says is usually higher but more predictable.
What the payment leaves out
Every figure above is principal and interest only. Closing costs aren’t in it, and neither is any origination charge or annual fee a lender adds. Lenders must disclose their own charges (application, annual, appraisal, credit report, attorney) and any third-party charges. On $100,000, a 2% charge would be $2,000, but that’s our placeholder, not a lender’s.
Compare lenders on APR and on the closing costs in the written disclosure, not on the payment alone.
One more check before you sign. If you’re looking at a variable rate, your budget should still hold if it climbs two or three points. Run the next higher row in the tables.
If no monthly payment is the goal
If none of these payments fits, a home equity agreement hands you a lump sum with no monthly payment, and settles later with a share of your home’s value. That costs more over time. Our home equity loan vs home equity investment example puts the two in dollars, and the guide to HELOC alternatives with no monthly payment covers every route. For the fuller picture, see HEI vs HELOC and our comparison of home equity agreement companies.
For one HELOC lender’s terms in detail, see our Achieve HELOC review.
100K home equity loan payment questions, answered
It depends on the rate and term. At 8% it’s $1,213 over 10 years, $956 over 15 years and $734 over 30 years. The table above runs rates from 6% to 12% and terms from 5 to 30 years.
Use Payment = P × r × (1 + r)^n ÷ ((1 + r)^n minus 1), where P is the amount, r is the annual rate divided by 12 and n is the number of months. The formula is the standard one for a fixed-rate loan paid down to zero.
During an interest-only draw period it’s the APR times $100,000 divided by 12, which is $583 at 7% and $750 at 9%. When repayment starts, the payment usually steps up because you begin paying down the balance. Over 20 years at 8% it would be $836.
A home equity loan usually has a fixed APR, so the payment doesn’t change. A HELOC usually has a variable APR, so its payment can change from month to month.
Because you’re now paying down the balance on a set schedule. The CFPB says payments in the repayment period are often much higher, and some borrowers must repay the full amount when it starts.
No. These figures cover principal and interest. Your property taxes and homeowners insurance, and any fees, are separate.
How we worked it out
Every payment on this page was computed by a short script from the two formulas shown above, then rounded. Payments in the grids are rounded to the nearest dollar, and cents are shown only in the worked check and the prime rate table. Totals use the unrounded payment times the number of payments, rounded to the nearest dollar. No lender’s rate was used. The rates are round examples, and the prime rate is the Federal Reserve’s.
Sources (4)
Government sources were read on the date shown.
- Federal Reserve Board. Selected Interest Rates (Daily), H.15. federalreserve.gov. Accessed October 13, 2026. Release dated October 9, 2026; bank prime loan rate shown for October 2 to 8, 2026.
- Consumer Financial Protection Bureau. What is a home equity line of credit (HELOC)?. consumerfinance.gov. Accessed October 13, 2026.
- Consumer Financial Protection Bureau. 12 CFR 1026.40, Requirements for home equity plans. consumerfinance.gov. Accessed October 13, 2026.
- Federal Trade Commission. Home Equity Loans and Home Equity Lines of Credit. consumer.ftc.gov. Accessed October 13, 2026.
Take the next step.
If a payment fits, price the credit line. If it doesn’t, see what an agreement could offer.
$15,000 to $750,000. The minimum credit score is 600 in most states. Funding in as few as 5 days on qualifying loans under $400,000.
Keep reading
ComparisonHEI vs HELOC: Which One Fits YouHow the monthly payment, total cost and qualifying rules compare.
RoundupTop Home Equity Agreement Companies ComparedCompare costs, minimum credit scores and state coverage for each company.
GuideWays to Tap Home Equity Without RefinancingWays to reach your equity while keeping your current mortgage.
Rates, terms and availability change. Check the current terms with the lender before you apply.