Borrowing $100,000 against your home's equity is a major financial decision. Your monthly payment depends on the interest rate, the repayment term, and whether you choose a home equity loan or a HELOC.
Run the numbers with the free home equity loan calculator on ezcalcs, then come back to this guide for context. Results are estimates for planning only.
This guide breaks down realistic payment estimates, compares both borrowing options, and walks through the factors that move your cost up or down. All figures here are estimates for planning purposes. Your actual rate and payment will depend on your lender, credit profile, and property.
Monthly Payment on a $100,000 Home Equity Loan at Today's Interest Rate
As of mid-2025, average home equity loan interest rates for well-qualified borrowers generally fall in the 7.5% to 9.5% range. Your rate could be higher or lower depending on credit score, loan-to-value ratio, and lender.
Here is what a $100,000 home equity loan payment looks like at a few common rates and terms:
| Interest Rate | 10-Year Term | 15-Year Term | 20-Year Term |
|---|---|---|---|
| 7.5% | ~$1,187/mo | ~$927/mo | ~$806/mo |
| 8.0% | ~$1,213/mo | ~$956/mo | ~$836/mo |
| 8.5% | ~$1,240/mo | ~$985/mo | ~$868/mo |
| 9.0% | ~$1,267/mo | ~$1,014/mo | ~$900/mo |
| 9.5% | ~$1,294/mo | ~$1,044/mo | ~$932/mo |
These are principal and interest only. They do not include property taxes, insurance, or other costs your lender may bundle into escrow.
A 15-year term at 8.5% puts your estimated monthly payment around $985. That is a useful midpoint for planning, but your quote from a lender will be specific to your situation.
Home Equity Loan or HELOC: Which Makes Sense for $100,000
A home equity loan and a HELOC both let you borrow against equity in your home. They work differently, and the right choice depends on how you plan to use the money.
Home equity loan: You receive a lump sum upfront. You repay it in fixed monthly installments over a set term. The interest rate is usually fixed, so your payment stays the same every month.
HELOC (home equity line of credit): You get an approved credit line you can draw from as needed, similar to a credit card. HELOCs have variable rates, and your monthly payments can change over time.
Key differences at a glance:
- Disbursement: Lump sum vs. revolving credit line
- Rate type: Typically fixed (home equity loan) vs. variable (HELOC)
- Payment structure: Predictable monthly payments vs. payments that shift with your balance and rate
- Best for: One-time large expenses vs. ongoing or phased spending (like home renovations over several months)
If you need the full $100,000 at once and want predictable monthly payments, a home equity loan is usually the simpler fit. If you are not sure how much you will actually need, or you want to borrow in stages, a HELOC gives more flexibility.
How Home Equity Loan and HELOC Interest Rates Affect Your Loan Payment
Even a small difference in interest rate makes a meaningful difference over the life of the loan. On a $100,000 balance over 15 years, the gap between 7.5% and 9.5% adds roughly $117 per month to your payment. Over 15 years, that is roughly $21,000 in extra interest.
Rate is the single biggest lever on your cost, aside from the loan amount itself.
Fixed Rate vs. Variable Rate on a Home Equity Line of Credit
Home equity loans almost always carry a fixed interest rate. Your payment is locked in from day one.
HELOCs have variable rates, which means the rate (and your payment) can rise or fall. Some HELOC lenders let you convert all or part of your balance to a fixed rate. This is sometimes called a "rate lock" or "fixed-rate option." Not every lender offers it, and the fixed rate is usually slightly higher than the current variable rate.
If rate predictability matters to you, ask your lender upfront whether you can fix the interest rate on your HELOC balance.
How the HELOC Rate Ties to the Prime Rate
Most HELOC rates are calculated as the prime rate plus a margin. The prime rate tracks the federal funds rate set by the Federal Reserve.
For example, if the prime rate is 8.50% and your lender's margin is 0.75%, your HELOC rate would be 9.25%.
When the Fed cuts rates, the prime rate drops, and your HELOC payment falls. When rates rise, your payment goes up. This is why HELOC monthly payments can change from month to month or quarter to quarter.
You cannot control the prime rate. You can control the margin by shopping multiple HELOC lenders and negotiating.
Home Equity Loan Payment by Repayment Term: 10-Year, 15-Year, and 20-Year
The repayment term you choose creates a direct tradeoff between monthly cost and total interest paid.
Shorter terms mean higher monthly payments but less total interest over the life of the loan. Longer terms lower your monthly obligation but cost more in interest overall.
Here is how total interest compares on a $100,000 home equity loan at 8.5%:
| Term | Monthly Payment | Total Interest Paid |
|---|---|---|
| 10-year | ~$1,240 | ~$48,800 |
| 15-year | ~$985 | ~$77,300 |
| 20-year | ~$868 | ~$108,300 |
Moving from a 10-year to a 20-year term saves about $372 per month, but costs roughly $59,500 more in interest. That is a real tradeoff worth thinking through.
Most borrowers land on a 15-year term as a balance between affordability and interest cost. But the right choice depends on your monthly budget and how quickly you want to repay the loan.
HELOC Payment During the Draw Period vs. the Repayment Period
A HELOC has two distinct phases that affect what you pay each month.
Draw period: Typically 10 years. During this time, you can borrow from your approved credit line. Many lenders require only interest-only payments on whatever balance you carry. Some lenders allow or require principal payments during the draw period, but interest-only is common.
Repayment period: Usually 10 to 20 years after the draw period ends. You can no longer borrow. Your balance converts to a fully amortizing loan, and you pay both principal and interest. This is when payments often jump significantly.
Understanding both phases matters because a low draw-period payment can mask a much higher repayment-period payment.
Interest-Only HELOC Payment on a $100,000 HELOC Amount
If you draw the full $100,000 and your HELOC rate is 9.0%, your interest-only payment during the draw period would be approximately:
$100,000 x 9.0% ÷ 12 = ~$750/month
That is just interest. You are not reducing the loan balance at all.
When the draw period ends and repayment begins (say, a 15-year repayment period at the same 9.0% rate), your payment jumps to roughly $1,014 per month. That is a $264 increase, and it catches some borrowers off guard.
If rates rise during the draw period, your interest-only payment rises too. At 10.5%, the same $100,000 balance costs ~$875/month in interest alone.
Planning tip: Even during the draw period, paying more than the minimum reduces your balance and lowers your required payment later.
How to Calculate Your Home Equity and Loan-to-Value
Before you can borrow, you need to know how much equity you have. The math is straightforward.
Home equity = Current home value − Current mortgage balance
If your home is worth $350,000 and you owe $200,000 on your mortgage, you have $150,000 in equity.
Loan-to-value (LTV) is how lenders measure risk. It includes your existing mortgage plus the new loan, divided by your home's value. This combined figure is called the combined loan-to-value (CLTV).
CLTV = (Mortgage balance + New loan amount) ÷ Home value
Using the example above with a $100,000 home equity loan:
($200,000 + $100,000) ÷ $350,000 = 85.7% CLTV
Most lenders cap CLTV at 80% to 90%. Some go to 95%, but higher CLTV usually means a higher interest rate.
If your CLTV is too high, you may need to borrow less, pay down your mortgage first, or wait for your home's value to increase.
How Credit Score Changes Your Interest Rate on Home Equity Loans and HELOCs
Your credit score is one of the biggest factors in the rate a lender offers you. Higher scores get lower rates. Lower scores pay more.
Here is a rough sense of how credit score tiers can affect rates on home equity loans and HELOCs:
- 740+: Likely qualifies for the lowest advertised rates
- 700–739: Rates may be 0.25% to 0.75% higher
- 660–699: Rates may be 1.0% to 2.0% higher
- Below 660: Some lenders decline; others charge significantly higher rates
On a $100,000 loan over 15 years, the difference between a 7.5% rate and a 9.5% rate is about $117 per month, or roughly $21,000 in total interest.
Before applying, check your credit report for errors. Paying down credit card balances below 30% of your limit can improve your score relatively quickly. Even a modest score improvement can shift you into a better rate tier.
Use a HELOC or Home Equity Loan: When Each One Makes Sense
Both options tap your home's equity. The best choice depends on your spending pattern, risk tolerance, and preference for payment predictability.
When a HELOC Makes Sense Over a Lump Sum
A HELOC works well when:
- You are funding home renovations in phases and do not need all $100,000 at once
- You want to keep HELOC funds available as a financial safety net without paying interest until you draw
- You are comfortable with variable interest rates and the possibility that monthly payments can change
- You want to borrow only what you need and avoid paying interest on unused funds
A HELOC gives you flexibility. You only pay interest on the amount you actually draw, not the full credit line. If you only use $40,000 of a $100,000 HELOC, your payment is based on $40,000.
When a Home Equity Loan Payment Fits Better Than a HELOC Payment
A home equity loan works well when:
- You need the full $100,000 upfront for a single expense (debt consolidation, major renovation, large purchase)
- You want a fixed monthly payment that never changes
- You prefer the discipline of a set repayment schedule, similar to an installment loan
- You are concerned about rising interest rates increasing your monthly cost
Predictable monthly payments make budgeting simpler. If you know you need the full amount and want certainty, a home equity loan removes the rate risk that comes with a HELOC.
Repayment Strategies for a $100,000 Home Equity Loan and HELOC
A $100,000 balance is significant. Having a repayment strategy helps you stay on track and reduce total interest.
For home equity loans:
- Make biweekly payments. Splitting your monthly payment in half and paying every two weeks results in 13 full payments per year instead of 12. This can shave months or years off your term.
- Round up your payment. Paying even $50 to $100 extra per month toward principal reduces total interest noticeably over a 15-year or 20-year term.
- Apply windfalls to principal. Tax refunds, bonuses, or other lump sums can accelerate payoff.
For HELOCs:
- Pay more than the interest-only minimum during the draw period. Every dollar above the minimum goes toward reducing your balance.
- Avoid treating your HELOC like a credit card. Drawing, repaying, and drawing again can keep you in debt indefinitely.
- Consider converting to a fixed rate before the repayment period if your lender offers it and you want payment stability.
- Plan for the payment jump. Know what your required payment will be when the repayment period starts so the increase does not strain your budget.
Can you pay off a home equity loan or HELOC early? In most cases, yes. Most home equity loans and HELOCs do not have prepayment penalties. Check your loan agreement to confirm.
Using a Home Equity Loan Payment Calculator or HELOC Calculator to Estimate Your Monthly Payment
Online calculators are useful for getting a quick ballpark of your monthly cost. A home equity loan payment calculator typically asks for three inputs:
- Loan amount (e.g., $100,000)
- Interest rate
- Loan term (in years)
A HELOC calculator may also ask about the draw period length, whether payments are interest-only during the draw period, and the repayment period length.
These tools use standard loan amortization formulas. Plug in a few different rate and term combinations to see how your estimated monthly payment shifts.
What an Equity Loan and HELOC Calculator Can and Cannot Tell You
What calculators can do:
- Show you estimated monthly payment amounts based on the inputs you provide
- Help you compare different rate, term, and balance scenarios side by side
- Give you a starting point for budgeting
What calculators cannot do:
- Tell you what rate you will actually qualify for (that depends on your credit score, CLTV, income, and lender)
- Account for fees, closing costs, or annual charges some lenders add
- Predict future rate changes on a variable-rate HELOC
- Replace a formal loan estimate from a lender
Calculator estimates are planning tools, not loan offers. Use them to narrow your options and compare scenarios. Then get actual quotes from at least two or three lenders to see your real numbers.
One common question: how accurate are online home equity calculators? The payment math itself is standard and reliable. The accuracy of the result depends entirely on whether the rate and term you enter match what a lender will actually offer you. Garbage in, garbage out. Start with realistic rate assumptions based on your credit tier and current market averages, and the estimates will be useful for planning.