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Reverse Mortgage Calculator

Calculate potential reverse mortgage proceeds based on your home value, age, interest rate, and fees. See estimated lump sum, monthly payments, or line of credit amounts available through a Home Equity Conversion Mortgage (HECM).

A reverse mortgage is a loan that lets homeowners aged 62 and older convert part of their home equity into cash without selling the home or making monthly mortgage payments. Instead of you paying the lender every month (as with a traditional mortgage), the lender pays you — either as a lump sum, monthly income, or line of credit. The accumulated balance plus interest is repaid when the home is sold, the last surviving borrower moves out permanently, or the borrower passes away.

The most common reverse mortgage in the U.S. is the Home Equity Conversion Mortgage (HECM), a federally insured product administered by HUD and FHA. HECMs have specific safeguards: the borrower can never owe more than the home is worth at sale (non-recourse), the borrower retains title to the home, and FHA insurance protects both lender and borrower against shortfall risk. Non-HECM "proprietary" reverse mortgages exist for higher-value homes but lack the federal protections.

This calculator estimates the principal limit (the maximum amount you could borrow) and the available proceeds after paying off any existing mortgage and closing costs. The actual available amount depends on your age (older borrowers receive more — the formula assumes shorter expected loan duration), home value (capped at the FHA lending limit, $1,209,750 in 2025), current interest rates (lower rates allow larger principal limits), and existing liens that must be paid off at closing. Treat the output as a planning estimate. Real reverse mortgages have complex fee structures and significant counseling requirements — never sign without independent advice.

Inputs

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Results

Net Available

$88,371

Principal Limit

$146,371

Lump Sum

$88,371

Loan Balance vs Home Value

Remaining Home Equity

Projected Balance Over Time

YearLoan BalanceHome ValueEquity
1$155,885.33$412,000.00$256,114.67
2$166,017.87$424,360.00$258,342.13
3$176,809.04$437,090.80$260,281.76
4$188,301.62$450,203.52$261,901.90
5$200,541.23$463,709.63$263,168.40
6$213,576.41$477,620.92$264,044.51
7$227,458.88$491,949.55$264,490.67
8$242,243.70$506,708.03$264,464.33
9$257,989.54$521,909.27$263,919.73
10$274,758.86$537,566.55$262,807.69
11$292,618.19$553,693.55$261,075.36
12$311,638.37$570,304.35$258,665.98
Last updated: Reviewed by the CalcMountain editorial team

Formula

Principal Limit Factor (PLF) approximation: The HECM principal limit is determined by an FHA table based on: Age of youngest borrower (older = higher PLF) Expected interest rate (lower = higher PLF) Home value (capped at FHA limit, $1,209,750 in 2025) Typical PLF values: Age 62 at 6% rate: PLF ≈ 0.40 (40% of home value) Age 65 at 6% rate: PLF ≈ 0.43 Age 70 at 6% rate: PLF ≈ 0.48 Age 75 at 6% rate: PLF ≈ 0.54 Age 80 at 6% rate: PLF ≈ 0.60 Age 85 at 6% rate: PLF ≈ 0.66 Maximum principal limit: Principal Limit = min(Home Value, FHA Limit) × PLF Available proceeds: Net Proceeds = Principal Limit − Existing Mortgage Balance − Closing Costs Loan balance growth (compounds over time): Future Balance = Initial Draw × (1 + r)^years Where r is the loan interest rate. The balance grows annually until repaid — typically when the home is sold or the borrower leaves. Lump sum vs monthly tenure payments vs line of credit: Lump sum: All proceeds at closing (subject to first-year draw limits) Monthly tenure: Equal payments for as long as you live in the home Monthly term: Equal payments for a specified number of years Line of credit: Available to draw as needed; unused portion grows over time Example: $400,000 home, age 65, 6.5% expected rate, $50,000 existing mortgage, $8,000 closing costs. Principal limit factor at age 65, 6.5%: ~0.42 Principal limit: $400,000 × 0.42 = $168,000 Less existing mortgage: $168,000 − $50,000 = $118,000 Less closing costs: $118,000 − $8,000 = $110,000 Net available to borrower: $110,000 (lump sum) or equivalent monthly/line-of-credit amounts.

How to use this calculator

  1. Enter your home's current market value. Lenders order an FHA-approved appraisal during application; for planning, use a recent professional opinion or major real estate website estimate.
  2. Enter the balance of any existing mortgage. This must be paid off at closing — reverse mortgages take first position on title.
  3. Enter the youngest borrower's age. The PLF is set by the youngest borrower's age; older borrowers qualify for larger principal limits because the loan is expected to last fewer years.
  4. Enter the expected interest rate. HECM interest rates are typically variable (tied to indexes like the 10-year Treasury or 1-year CMT) plus a margin. Fixed-rate HECMs are also available but usually require lump sum disbursement.
  5. Enter estimated closing costs. HECM closing costs are typically higher than traditional mortgages — origination fee (up to $6,000), FHA mortgage insurance premium upfront (2% of home value or lending limit, whichever is less), and standard title/recording/appraisal fees. Total typically $8,000–$15,000+.
  6. Choose your preferred payout option. Lump sum gives maximum immediate cash but starts the largest interest accumulation immediately. Monthly tenure provides income for life in the home. Line of credit offers flexibility and the unused balance grows.
  7. Review the principal limit, net proceeds after paying off existing mortgage and closing costs, and the projected loan balance over time.
  8. Before any actual application, complete HUD-approved counseling. This is required by federal law and is often the moment many seniors realize a reverse mortgage isn't right for them — the counseling fee ($125–$250) is far cheaper than the alternative cost of an inappropriate reverse mortgage.

Worked examples

Healthy mid-70s borrower — meaningful proceeds

$500,000 home value, age 75, 6.5% rate, no existing mortgage, $10,000 closing costs. Principal limit factor at age 75: ~0.54 Principal limit: $500,000 × 0.54 = $270,000 Net proceeds (after closing costs): $260,000 Available as: $260,000 lump sum OR ~$1,580/month tenure for life OR $260,000 line of credit (with unused portion growing at the loan rate). A meaningful retirement supplement. Line of credit option is often preferred — it provides flexibility, accrues no interest on the undrawn portion, and the credit line itself grows over time.

Younger borrower at FHA limit

$1,500,000 home (but FHA limit is $1,209,750), age 62, 7% rate, $200,000 existing mortgage, $15,000 closing costs. Principal limit factor at age 62, 7% rate: ~0.38 Principal limit: $1,209,750 × 0.38 = $459,705 (home value capped at FHA limit) Less existing mortgage: $459,705 − $200,000 = $259,705 Less closing costs: $259,705 − $15,000 = $244,705 Net available: ~$245,000 For high-value homes, consider proprietary jumbo reverse mortgages from private lenders — they handle homes above the FHA limit but lack federal insurance protections. Carefully evaluate the trade-off.

Long-term balance growth

$200,000 initial draw at age 65, 6.5% loan rate. Year 5: $200,000 × 1.065^5 ≈ $274,000 Year 10: $200,000 × 1.065^10 ≈ $375,000 Year 15: $200,000 × 1.065^15 ≈ $514,000 Year 20: $200,000 × 1.065^20 ≈ $705,000 Year 25: $200,000 × 1.065^25 ≈ $967,000 If the borrower lives in the home 25 more years, the balance grows to nearly $1M — exceeding many homes' eventual sale value. Non-recourse protection means the borrower (or estate) never owes more than the home sells for, but heirs receive nothing if the loan balance equals or exceeds sale proceeds. This balance-growth dynamic is why reverse mortgages are most valuable for older borrowers (less time for the balance to compound) and for borrowers who plan to leverage the home substantially in their later years rather than as an early-retirement strategy.

When to use this calculator

Use this calculator when considering a reverse mortgage as part of a retirement income strategy, when evaluating whether home equity should be tapped vs. preserved for inheritance, or when comparing reverse mortgage proceeds to alternatives (downsizing, traditional HELOC, family loan, selling).

Reverse mortgages make the most sense when: (1) the borrower has substantial home equity but limited income or savings, (2) the borrower intends to stay in the home for many years (the upfront costs make short-term use economically disastrous), (3) leaving the home as an inheritance is not a priority, and (4) the borrower (and any spouse) can handle the ongoing requirements (property taxes, insurance, maintenance — failure to keep current can trigger foreclosure).

Reverse mortgages make less sense when: the borrower might move within 5 years, the high upfront costs would consume a large fraction of the proceeds, the borrower has other retirement assets that should be tapped first, or leaving the home to heirs is a priority. In many cases, downsizing to a smaller home and investing the proceeds produces similar income with more flexibility and no compounding loan balance.

Pair this with the home-equity calculator (alternative ways to tap equity), the HELOC calculator (HELOC may be a better fit for shorter time horizons), the retirement-savings calculator (to confirm the gap that a reverse mortgage would fill), and the FIRE calculator (to model retirement income from all sources combined).

A vital point: reverse mortgages are heavily marketed, sometimes aggressively, to seniors. Always (1) complete the HUD-required counseling before applying, (2) consult an attorney and trusted family members, (3) be skeptical of high-pressure sales — legitimate reverse mortgage products don't require fast decisions, and (4) understand exactly what happens after death or move-out. Many family disputes and financial losses come from misunderstanding what a reverse mortgage actually is.

Common mistakes to avoid

  • Treating a reverse mortgage as "free money." It's a loan with interest that compounds, eventually consuming much of the home's value. The estate or heirs typically receive significantly less than they would have if the home had been sold or owned outright.
  • Failing to maintain the property, pay taxes, or pay insurance. These are still the borrower's responsibility. Failure to keep current on any of them is grounds for the lender to call the loan due, potentially leading to foreclosure.
  • Adding a non-borrowing spouse incorrectly. Both spouses should ideally be on the loan; if only one is (often because the other was under 62), the surviving spouse may not be able to stay in the home if the borrowing spouse passes away first. Recent rules have improved protections, but this still requires careful structuring.
  • Taking a lump sum when a line of credit would be better. The line of credit option is often the more powerful and flexible tool, with the unused portion actually growing over time. Lump sums start interest accumulation immediately on the full amount.
  • Buying a fixed-rate reverse mortgage as a forced-lump-sum product. Fixed-rate HECMs typically require taking the full draw at closing, locking in interest accumulation on the full amount immediately. Variable-rate HECMs with line of credit are often better unless you have a specific lump-sum need.
  • Skipping counseling or rushing the decision. HUD requires counseling for a reason — many seniors discover during counseling that the product isn't right for their situation. Pressure to "lock in" today's rates is a red flag.

Frequently Asked Questions

Sources & further reading

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