Finance
Reverse Mortgage Calculator
See how age, home value, mortgage balance, and interest rates shape your estimated principal limit, lump sum, monthly payout, and standby line of credit.
Your Details
Estimated Principal Limit
About $208,170 remains after paying off the current mortgage in this educational estimate.
Educational estimate based on age, home value, expected rate, and the current mortgage payoff; it is not an FHA/HUD quote.
Projection assumes only the current mortgage payoff is advanced at closing and unused proceeds remain available as a standby line of credit.
Lump Sum
Net cash available immediately after paying off current mortgage.
Monthly Payout
Estimated monthly payout spread across 324 months.
Line of Credit
A standby line of credit starts at $208,170 and could grow to $840,744 if unused.
20-Year Projection
How equity may change over time
Illustrative only. Assumes 4% annual appreciation and constant interest rate. Not an FHA underwriting result.
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About this calculator
Method, formulas, and limits.What this does
Estimates how much a homeowner age 62+ could access through a reverse mortgage, including the principal limit, lump sum available after paying off an existing mortgage, monthly tenure payout, and standby line of credit. A 20-year projection chart shows how home equity and loan balance may change over time under assumed appreciation and interest rates.
Who it is for
Homeowners aged 62 or older who want to understand their reverse mortgage options without sharing personal information. Also useful for family members helping aging parents evaluate whether a reverse mortgage makes sense as part of a broader retirement plan.
How it works
The calculator applies an age-based factor (higher for older borrowers) and a rate-based factor (adjusting for current interest rates) to the home value to estimate the principal limit. It subtracts any existing mortgage balance to find the lump sum available. The monthly tenure payout divides that lump sum by expected tenure months, and the line of credit shows the unused amount growing at the assumed rate over 20 years.
Limitations
This is an educational estimate, not an FHA underwriting result. Actual reverse mortgage limits depend on FHA lending limits, mandatory counseling, property type, occupancy status, and lender-specific fees. The projection assumes constant appreciation and interest rates, which may not reflect actual market conditions.
Key calculations
- Principal limit
- Principal limit = home value × age factor × rate factor. The age factor increases from 0.36 at age 62 to 0.60 at age 95+; the rate factor adjusts for current interest rates around a 7% baseline.
- Age factor
- Age factor = clamp(0.36 + (age − 62) × 0.0085, 0.36, 0.60). Older borrowers qualify for a larger share of their home equity because the expected remaining loan term is shorter.
- Lump sum available
- Lump sum = max(principal limit − existing mortgage balance, 0). This is the cash available after paying off any current mortgage from the reverse mortgage proceeds at closing.
- Monthly tenure payout
- Monthly payout = lump sum / tenure months. Tenure months = clamp((92 − age) × 12, 120, 360). The payout spreads the available cash across the borrower's expected remaining years for steady income.
Reference ranges
- Principal limit percentage
- Typical principal limits range from 36% to 60% of home value depending on borrower age. A 65-year-old might access approximately 39%; an 85-year-old might access approximately 56%.
- Interest rate sensitivity
- A 1% change in the expected interest rate shifts the principal limit by roughly 3% in the opposite direction. Lower rates increase available funds; higher rates reduce them.
- Lump sum vs. tenure tradeoff
- Taking the full lump sum maximizes immediate cash but eliminates future line of credit growth. Opting for monthly tenure provides steady income spread across years but caps total access if needs change.
- Equity erosion timeline
- At a 7% loan growth rate and 4% home appreciation, remaining equity declines steadily and may approach zero within 20–30 years depending on the initial draw. The chart visualizes this trajectory.
How to use it
- 1.Enter your ageSet the age of the youngest homeowner (minimum 62). The age factor directly affects how much equity you can access—older borrowers qualify for a higher percentage of their home value.
- 2.Set your home valueEnter your current home value or a conservative estimate. This is the starting point for all calculations and should reflect a realistic current market value, not a hoped-for future value.
- 3.Enter existing mortgage balanceAdd any remaining mortgage balance. The calculator subtracts this from the principal limit to show the net cash you would have available after paying off your current loan.
- 4.Review the estimateRead the estimated principal limit, lump sum available, monthly tenure payout, and standby line of credit. The projection chart shows how equity and loan balance may change over a 20-year horizon.
- 5.Adjust assumptionsChange the interest rate or age to see how different scenarios affect your available funds. Higher rates reduce the limit; older ages increase it. Testing multiple scenarios helps you understand the range of possibilities.
- 6.Prepare for a real quoteUse the optional form to prepare notes for a licensed advisor. No personal information is required to use the calculator, and the form data stays local to your browser in v1.
The estimate depends on your age, home value, existing mortgage balance, and the assumed interest rate. In general, higher home equity and older borrower age increase the available principal limit (typically 36–60% of home value), while larger existing mortgage balances reduce the cash left after payoff. The calculator shows the full breakdown so you can see exactly how each factor affects the result.
No. The borrower keeps title to the home and stays responsible for property taxes, homeowners insurance, and maintenance. The loan is repaid—plus accrued interest—when the home is sold, the borrower moves out permanently, or the home is no longer used as the primary residence. You never owe more than the home's value at repayment.
No. The calculator is completely public and free to use. You can see the full estimate, projection chart, and all FAQ content without entering any personal information. The optional quote form at the bottom is for users who want to prepare notes for a future conversation with a licensed advisor.
A standby line of credit is the amount available to draw later instead of taking everything as a lump sum upfront. In many reverse mortgage structures, unused credit can grow over time at the loan's interest rate, which is why the calculator shows both the starting line of credit and its projected value after 20 years of growth.
The main requirement for this educational tool is age 62 or older for the youngest homeowner. Real FHA reverse mortgage (HECM) guidelines also consider property type (single-family, HUD-approved condo, or manufactured home), mandatory HUD-approved counseling, occupancy as primary residence, and financial assessment. This calculator covers the core math but does not replace the official HUD counseling session.
Age is one of the biggest factors because it determines the expected remaining loan term. A 62-year-old qualifies for roughly 36% of their home value via the age factor, while an 85-year-old qualifies for about 56%. The calculator applies a formula (age factor = 0.36 + (age − 62) × 0.0085) so you can see how a few extra years can substantially increase the available amount.
When the last borrower permanently moves out, sells the home, or passes away, the loan becomes due and payable. The home is typically sold and the proceeds repay the loan balance. Any remaining equity goes to the borrower or their heirs. If the loan balance exceeds the home value, the government insurance (FHA insurance premium paid into the program) covers the difference—heirs never owe more than the home's appraised value.
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