Home Equity Loan for $1 Million: Payment Calculator

This calculator estimates the monthly principal-and-interest payment and total interest on a $1 million home equity loan from the APR and repayment term you enter. Enter the loan amount, annual APR, and term to see the estimated payment and interest; the calculation does not determine how much a lender may approve.

Formula

The calculator uses the standard fixed-payment loan formula. It first finds the monthly payment, rounded to the nearest cent, then subtracts the original principal from all scheduled payments to estimate total interest.

• p is the principal, or amount borrowed, in dollars.
• apr is the annual percentage rate entered as a percentage per year.
• r is the monthly rate, calculated as apr / 1200.
• n is the number of monthly payments, calculated as years × 12.
• pmt is the monthly principal-and-interest payment in dollars.
• int is estimated total interest in dollars over the full term.

In symbols, payment = p × r / [1 − (1 + r)⁻ⁿ]. Total interest = (payment × n) − p. The formula assumes equal payments made monthly and a fixed rate. A $1 million loan is the amount being modeled, not a statement about available loan limits.

Worked Example

Using the calculator’s defaults: principal p = $1,000,000, APR = 8%, and term = 5 years.

1. Convert the APR to a monthly rate: r = 8 / 1200 = 0.0066667.
2. Convert the term to payments: n = 5 × 12 = 60.
3. Substitute into the payment formula: $1,000,000 × 0.0066667 / [1 − (1.0066667)⁻⁶⁰].
4. Rounded to cents, the monthly payment is $20,276.31.
5. Multiply the rounded payment by 60: $20,276.31 × 60 = $1,216,578.60. Subtract the $1,000,000 principal: estimated total interest is $216,578.60.

Assumptions

• The interest rate remains fixed for the entire term.
• Payments are made monthly, with the first payment one month after borrowing.
• Interest is modeled monthly at APR divided by 12.
• Fees, taxes, insurance, and any escrow or other charges are not included.
• The calculation assumes the full principal is borrowed at the start and repaid through equal scheduled payments.

What a $1 Million Home Equity Loan Means

A home equity loan is generally structured as a lump-sum loan secured by the borrower’s home. The amount borrowed is repaid in installments under the loan’s terms. With a $1 million example, the payment depends not only on the principal but also on the APR and term. A longer term usually spreads repayment over more months; because interest accrues for longer, total interest can also be higher, all else equal.

Home equity is the difference between a home’s value and debts secured by it. That arithmetic does not, by itself, establish how much a borrower can borrow. A lender may consider the property, existing debts, income, credit information, and other factors, and its requirements and available terms vary. Get any actual rate, fees, limits, and eligibility details directly from the lender; this calculator does not model approval.

How to Read the Results

The monthly payment shown is principal and interest only. It is a scheduled payment estimate, not necessarily the full amount a household would pay in connection with a home or loan. The total-interest figure adds the rounded monthly payment across the entire term and subtracts the starting principal. It assumes every scheduled payment is made as modeled, without extra payments, missed payments, rate changes, or fees.

For example, changing the term while keeping the principal and APR fixed changes both the number of payments and the amount of each payment. Changing the APR changes the interest portion and typically the payment as well. Enter the terms from a written loan quote to estimate that particular scenario; do not treat the example APR as a current or typical rate.

Costs, Risks, and Common Misconceptions

A common misconception is that a home equity loan calculator tells someone how much they can safely borrow or what a lender will approve. It does neither. The calculator only applies a payment formula to the inputs. It also does not estimate the home’s value, outstanding mortgage balances, lender charges, or other borrowing costs.

Because the loan is secured by a home, missed payments can have serious consequences, potentially including loss of the property under the applicable loan terms and rules. Before relying on an estimate, review the lender’s full disclosure for the payment schedule, APR, fees, whether the rate can change, and the consequences of nonpayment. The legal and tax treatment of a particular loan is not calculated here; consult qualified sources for questions about those topics.

• Check that the entered APR and term match the same loan offer.
• Distinguish the APR from a rate quoted without fees; the calculator does not add or infer fees.
• Do not confuse home equity with cash that is automatically available to borrow.
• Compare the calculator’s principal-and-interest estimate with the lender’s complete payment and cost disclosures.

Frequently Asked Questions

What is the monthly payment on a $1 million home equity loan?
The answer depends on the APR and term. At the calculator defaults of 8% APR and five years, the estimated principal-and-interest payment is $20,276.31 per month. This is an arithmetic example, not a quoted rate or lender offer.

Can I get a $1 million home equity loan?
This calculator cannot determine that. Approval and available borrowing amounts depend on lender-specific review and the details of the property and borrower. Ask a lender for its requirements and a written estimate.

Does the payment include fees, taxes, or insurance?
No. The displayed payment covers modeled principal and interest only. It excludes fees, taxes, insurance, and escrow or other charges.

Does a longer term lower the monthly payment?
For the same principal and fixed APR, spreading repayment over more monthly payments generally lowers the scheduled payment, while the longer repayment period can increase total interest. Enter both terms to compare the formula’s estimates.

Is a home equity loan the same as a home equity line of credit?
No. A home equity loan is generally a lump-sum installment loan, while a line of credit allows borrowing under a revolving credit arrangement. Their payment structures and terms differ, and this calculator models only a fixed-payment installment loan.

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

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in p | Loan amount | $ | 1000000 | 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