Reverse Mortgage Calculator

Reverse Mortgage Eligibility and Payment Estimator

Reverse Mortgage Loan Formula

Formula

\[ \text{Loan Amount} = \text{Property Value} \times \frac{\text{LTV}}{100} \\ \text{Installment} = \frac{L \times r}{1 - (1 + r)^{-n}} \]

Where:

$\text{Property Value}$ — current market value of the home
$\text{LTV}$ — Loan-to-Value ratio allowed by the lender, in %
$L$ — loan amount (Property Value × LTV)
$r$ — periodic interest rate (annual rate ÷ number of disbursements per year)
$n$ — total number of disbursements (years × disbursements per year)

The first formula caps the total loan by the lender's Loan-to-Value limit. The second converts that amount into equal periodic payouts using the standard annuity payment formula.

Reverse Mortgage Loan – Calculation Example

Example: a home worth $5,000,000, a lender allowing an LTV ratio of 60%, an 8% annual interest rate, and a 15-year disbursement period with monthly payouts.

\[ L = 5{,}000{,}000 \times \frac{60}{100} = 3{,}000{,}000 \]

\[ r = \frac{0.08}{12} \approx 0.006667, \qquad n = 15 \times 12 = 180 \]

\[ \text{Installment} = \frac{3{,}000{,}000 \times 0.006667}{1 - (1 + 0.006667)^{-180}} \approx 28{,}669.56 \]

Result: the borrower can access a total loan of $3,000,000, paid out as monthly installments of approximately $28,669.56 for 15 years.

How to Use the Reverse Mortgage Loan Calculator

Enter the Property Value — the current market value of your home.
Enter the LTV Ratio — the maximum Loan-to-Value percentage your lender allows.
Enter the Disbursement Period — the number of years over which the loan will be paid out to you.
Select the Disbursement Frequency: One Time (the full loan amount in a single payment), Yearly, Half-Yearly, Quarterly, or Monthly.
Enter the Interest Rate — the annual rate charged by the lender.
Read the Installment Amount — the fixed payout you would receive at each interval (or the lump sum if you chose One Time).

What Is a Reverse Mortgage?

A reverse mortgage is a loan that allows homeowners — typically seniors — to borrow against the equity in their home without selling it and without making monthly loan payments. Instead of the borrower paying the bank, the bank pays the borrower, either as a lump sum, a line of credit, or a stream of regular installments. The loan, plus accumulated interest, is repaid when the home is sold, the borrower moves out permanently, or the estate is settled.

The amount you can access depends primarily on two factors: the value of your home and the Loan-to-Value (LTV) ratio the lender permits. Lenders do not allow you to borrow the full value of the property — the LTV cap protects them against falling home prices, and in government-insured programs it typically increases with the borrower's age. Multiplying the property value by the LTV ratio gives the maximum loan principal.

This calculator then converts that principal into equal periodic payouts using the annuity formula. Each installment consists partly of principal and partly of interest, so that the loan is fully amortized — the balance reaches exactly zero at the end of the disbursement period. Choosing a longer period lowers each installment but increases the total interest paid; a shorter period does the opposite. To compare this with a traditional loan where you make the payments, try our Mortgage Payment or Loan Calculator.

Assumptions, Limitations, and Practical Tips

Amortizing model: the calculator assumes a fully amortizing payout stream. Many real reverse mortgage programs (such as the US HECM) instead let interest accrue on the outstanding balance, with no scheduled installments at all; the total debt then grows over time rather than shrinking.
Constant rate and value: the interest rate and property value are assumed fixed for the whole period. Variable-rate loans and home price changes are not modeled.
Costs excluded: origination fees, closing costs, mortgage insurance premiums, and servicing fees are not included and can noticeably reduce the net amount available.
One Time disbursement: if you select One Time, the calculator returns the full loan amount as a single payment, with no installment schedule.
Non-recourse feature: most reverse mortgages are non-recourse, meaning the repayment can never exceed the home's value at the time of repayment — a protection worth confirming with your lender.

Because eligibility rules, LTV limits, and tax treatment vary by country and program, treat the result as an estimate for planning purposes. For a broader view of your retirement finances, combine it with our Retirement Planner and Mortgage Calculator.

Frequently Asked Questions

How do I calculate a reverse mortgage installment by hand?

First find the loan principal: multiply your property value by the LTV ratio, e.g. $ L = 5{,}000{,}000 \times 0.60 = 3{,}000{,}000 $. Then divide the annual interest rate by the number of payouts per year to get $ r $, and multiply the years by that same number to get $ n $. Plug these into the annuity formula $ \text{Installment} = \frac{L \times r}{1 - (1 + r)^{-n}} $. With a spreadsheet, the same result comes from the PMT function.

What is a good LTV ratio for a reverse mortgage?

Most reverse mortgage programs allow borrowing between roughly 40% and 70% of the home's value. Younger borrowers get lower limits; older borrowers qualify for more. In the US HECM program, the principal limit factor rises with age, so a 75-year-old can typically access more equity than a 62-year-old. An LTV above 80% is unusual because lenders need a buffer against falling home prices. Always confirm the exact limit with your lender, since it also depends on rates and program rules.

Does a longer disbursement period give me more money?

No — the total loan amount stays the same, because it is fixed by the property value and LTV ratio. A longer period simply spreads the same principal over more payouts, so each installment is smaller. However, interest is charged over a longer time, so the total interest cost is higher. A shorter period gives larger installments but lower overall interest. Use the calculator with different period lengths to see the trade-off.

Why is this calculator different from a HECM or real reverse mortgage quote?

This tool models a fully amortizing payout stream, where each installment includes principal and interest and the balance falls to zero at the end. Real programs like the US HECM work differently: you receive money up front, no installments are scheduled, and interest accrues so the debt grows over time. It also excludes fees, mortgage insurance premiums, and rate adjustments. Treat the result as a planning estimate, not a lender quote.

What happens if I choose a One Time disbursement?

The calculator skips the annuity formula entirely and returns the full loan amount $ L = \text{Property Value} \times \text{LTV} $ as a single lump sum. This is useful for comparing a lump-sum option against a stream of monthly payments. In practice, a lump sum typically carries a higher risk of exhausting your equity early, and some programs charge a higher rate on lump-sum draws — worth checking before deciding.

Are reverse mortgage payouts taxable, and do they affect my benefits?

In most countries, including the US, reverse mortgage payouts are considered loan proceeds, not income, so they are generally not taxable. However, they can affect means-tested benefits such as Medicaid or supplemental security income if the money is not spent within the month it is received. Rules differ by country and program, so consult a tax advisor or benefits specialist before committing. This calculator does not model tax or benefits effects.

What common mistakes should I avoid when using this calculator?

The most frequent errors are entering the annual rate where a periodic rate is expected — the tool handles the division for you, so always type the annual rate — and forgetting that the LTV ratio must be a percentage, not a decimal. Also remember that the result excludes fees and closing costs, assumes a constant interest rate and property value, and uses an amortizing model that most real reverse mortgage products do not follow. Confirm all figures with your lender.