HECM for Purchase Calculator
The move usually announces itself years before it happens. The two-story colonial that made sense at 45 stops making sense at 72: the staircase becomes a daily calculation, the nearest grandchild is a two-hour flight away, and the equity locked in the house is doing nothing for anyone. Selling and relocating — to a single-story home, closer to family — is the obvious answer, except for one snag. Nobody at 72 wants to sign up for thirty years of new mortgage payments, and paying all cash can drain the very sale proceeds that were supposed to fund retirement. The federal HECM for Purchase program, often shortened to H4P, was designed for exactly this squeeze, and this HECM for purchase calculator page exists to put real numbers on it: how large the required down payment actually is, what determines it, and what happens to the loan balance afterward.
H4P lets a buyer aged 62 or older purchase a new primary residence and take out an FHA-insured reverse mortgage on it in one combined transaction. The buyer brings a substantial down payment, usually funded from the old home's sale proceeds, and the reverse mortgage covers the rest. How substantial depends on the buyer's age and the expected rate: on a $450,000 purchase at a 7% expected rate, with $3,000 of other closing costs assumed, the calculator on this page puts the cash needed at closing at $327,600 (72.8% of the price) for a 62-year-old buyer and $238,050 (52.9%) for an 85-year-old. The loan comes with no monthly principal-and-interest payment due for as long as the borrower lives in the home and meets the loan terms. The sections below work through the program mechanics, the down-payment math on a concrete $450,000 example, and the rules that trip buyers up.
Project Your HECM for Purchase Numbers
Closing costs & payout options
The origination fee defaults to the federal maximum for your home value. Lenders may charge less, so enter your quote if you have one. “Other closing costs” is your own estimate: appraisal, title, recording and counseling.
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Down payment needed (estimate)
$291,600
| Maximum claim amount | $450,000 |
| HUD principal limit factor (age 70, 6.500% row) | 0.392 |
| Principal limit | $176,400 |
| Upfront mortgage insurance (2%) | − $9,000 |
| Origination fee | − $6,000 |
| Other closing costs | − $3,000 |
| Purchase price | − $450,000 |
| Cash you bring to closing | $291,600 |
Estimate based on HUD's published principal limit factors and FHA fee rules. A lender's figure will also reflect your locked rate, the appraisal, and any set-aside for property taxes and insurance, which this calculator does not model.
Balance, line of credit and equity over time (6.5% rate + 0.5% annual mortgage insurance)
| Year | Age | Loan Balance | Unused Line of Credit | Home Value | Equity Left |
|---|---|---|---|---|---|
| 1 | 71 | $189,152 | $0 | $450,000 | $260,848 |
| 5 | 75 | $250,069 | $0 | $450,000 | $199,931 |
| 10 | 80 | $354,504 | $0 | $450,000 | $95,496 |
| 15 | 85 | $502,554 | $0 | $450,000 | $0 |
| 20 | 90 | $712,434 | $0 | $450,000 | $0 |
The starting balance is the payoff, financed closing costs and any cash drawn at closing. The table assumes no further draws and a constant rate. HECMs are non-recourse, so you or your heirs never owe more than the home is worth when the loan is repaid.
One Closing, Two Jobs: What Makes H4P Different
A standard Home Equity Conversion Mortgage converts equity in a home you already own into loan proceeds. HECM for Purchase, authorized by Congress in the Housing and Economic Recovery Act of 2008 and available since January 2009, runs the same FHA-insured machinery in the opposite direction: it originates the reverse mortgage and completes a home purchase at a single closing. Before H4P existed, a retiree who wanted both outcomes had to close twice — buy the new house for cash, then apply for a reverse mortgage on it months later — paying two full sets of closing costs along the way. H4P collapses that into one transaction with one set of costs.
Everything structural about the loan is standard HECM: it is insured by the FHA, requires the youngest borrower to be at least 62, charges an upfront mortgage insurance premium of 2% of the maximum claim amount plus ongoing annual MIP of 0.5% of the outstanding balance, is non-recourse (neither you nor your heirs can owe more than the home is worth when the loan is settled), and requires a counseling session with a HUD-approved agency before the application. If the base program is unfamiliar, our HECM reverse mortgage calculator page covers those foundations in depth; we also maintain a companion reverse mortgage purchase calculator that approaches the same transaction from a buyer's-scenario angle. This page goes deeper on the federal program rules themselves — where the down-payment requirement comes from, what HUD requires of the property, and what the buyer still owes after closing.
The Required Investment: Why the Down Payment Is So Large
The single biggest surprise for most H4P shoppers is the size of the required cash contribution, which HUD calls the borrower's monetary investment. A reverse mortgage will never finance the full purchase price, because the loan's principal limit — the maximum it can advance — is a fraction of the home's value determined by HUD's Principal Limit Factor tables. Three inputs set that fraction: the age of the youngest borrower (older borrowers qualify for more), the expected interest rate at closing (lower rates allow more), and the lesser of the purchase price, appraised value, or the FHA's national lending limit. Whatever the principal limit doesn't cover, plus closing costs, the buyer must bring in cash. Younger buyers at higher rates bring the most; older buyers at lower rates bring less. On a $450,000 price at a 7% expected rate, the calculator above shows a cash requirement of 72.8% of the price at age 62, 67.0% at age 70 and 52.9% at age 85.
Here is a concrete illustration for a 70-year-old buying a $450,000 single-story home. Assume an expected rate of 7%. HUD's Principal Limit Factor for age 70 at 7% is 0.370 (from the table on HUD's HECM page), so the principal limit is $450,000 × 0.370 = $166,500. Closing costs stack on top: the upfront FHA mortgage insurance premium is 2% of the $450,000 maximum claim amount, or $9,000; the origination fee at its federal maximum for that claim amount is $6,000; and third-party charges (appraisal, title, recording) are assumed here at $3,000, a placeholder to replace with your Loan Estimate's figure. If those $18,000 in costs are financed inside the loan, the required monetary investment is $450,000 + $18,000 − $166,500 = $301,500, or 67.0% of the purchase price, delivered as certified funds at closing. Those are the figures the calculator above shows for these inputs. The buyer in this example would typically fund it from the sale of the previous home, keep whatever proceeds remain, and never owe a monthly mortgage payment on the new house. Treat these figures as an estimate, not a quote: the factor moves with the expected rate on the day you lock, the appraisal can come in below the price, and lenders' other fees differ, which is why two lenders can price the same house differently. Our reverse mortgage closing cost calculator breaks down the fee side of this equation in more detail.
One federal rule shapes where that $301,500 may come from: HUD requires the monetary investment to be drawn from documented, allowable sources — sale proceeds from a prior home, savings, or properly documented gifts. Borrowed funds, credit-card advances, and most forms of seller financing are prohibited, and seller contributions are tightly restricted, so the paper trail on your funds matters as much as the amount.
The H4P Transaction, Step by Step
Sequenced correctly, an H4P purchase follows the same broad path as a conventional financed purchase. The order matters, because federal rules place counseling before the application:
- Complete HUD-approved counseling. Federal law requires an independent counseling session with a HUD-approved agency before a lender may process your HECM application. Doing it before house-hunting keeps it off the critical path.
- Make an offer on the new home. The purchase contract should disclose HECM financing; experienced agents write the timeline accordingly.
- Apply and pass the financial assessment. The lender documents your income, credit history, and — critically — the source of your monetary investment, and verifies you can sustain property taxes, insurance, and upkeep. The appraisal is ordered here as well.
- Deliver the down payment from allowable funds. Sale proceeds from your previous home, savings, or documented gift funds are wired for closing; borrowed money is not permitted.
- Close both pieces at once. The purchase and the reverse mortgage are executed in a single closing; the loan funds the gap between your investment and the price.
- Move in — with no monthly mortgage payment. You must occupy the home as your principal residence within 60 days, and from that point no monthly principal-and-interest payment is ever due while the loan terms are met.
Whether you clear the program's underwriting gates in step 3 is worth previewing early — our reverse mortgage eligibility calculator walks through the age, property, and financial-assessment tests before a lender does.
H4P vs. Paying All Cash vs. a Conventional Mortgage
Retirees relocating after a home sale usually weigh three financing paths, and each trades off liquidity, monthly obligation, and long-run cost differently:
| All cash | Conventional loan | HECM for Purchase | |
|---|---|---|---|
| Cash needed at closing (on $450,000) | $450,000 + costs | ~$90,000 (20% down) | $301,500 (this page's example) |
| Monthly principal & interest | None | Required for the loan term | None |
| Qualification hurdle | None | Full income/DTI underwriting | Financial assessment (lighter than DTI underwriting) |
| Interest cost over time | None | Paid monthly as you go | Accrues and compounds onto the balance |
| Equity at sale or death | Full value | Value minus declining balance | Value minus growing balance, floored at zero by non-recourse insurance |
The comparison sharpens the trade: relative to all cash, H4P leaves $148,500 of the example buyer's sale proceeds liquid (before the all-cash buyer's own closing costs) — invested, held for medical costs, or spent — at the price of a loan balance that compounds upward. Relative to a conventional loan, H4P demands far more cash up front but eliminates the fixed monthly payment, which many retirees on Social Security and fixed pension income cannot comfortably absorb, and which a conventional underwriter may not approve on retirement income alone. There is no universally right column; the right question is which resource — monthly cash flow, liquid savings, or terminal home equity — you can best afford to spend.
Property and Occupancy Rules HUD Enforces
Not every home a retiree might want qualifies for H4P financing, and the occupancy rules are firmer than many buyers expect:
- Principal residence, occupied within 60 days. The purchased home must become your principal residence, and you must move in within 60 days of closing. Second homes, vacation properties, and rentals are ineligible — the program cannot finance a snowbird's winter house.
- Eligible property types. Single-family homes, two-to-four-unit properties where the borrower occupies one unit, FHA-approved condominium projects (or units approved individually), and manufactured homes meeting FHA standards can qualify. Cooperative apartments cannot.
- New construction needs a certificate of occupancy. H4P is popular with buyers of newly built single-story homes in retirement communities, but HUD requires the certificate of occupancy (or its local equivalent) to be issued before the loan can close — a builder's half-finished spec home cannot close an H4P loan on a promise.
- The home must pass FHA appraisal standards. Health and safety deficiencies flagged by the appraiser must generally be corrected before closing, which matters when buying an older property.
Buyers who fall outside these rules — a condo project that was never FHA-approved, for instance — sometimes still have options, but they involve different products with different math, not the federal H4P program described here.
No Monthly Payment Is Not No Obligation
The phrase "no monthly mortgage payments" is accurate and also incomplete, and the gap between the two is where reverse mortgages get people into trouble. An H4P borrower remains personally responsible for property taxes, homeowners insurance, any HOA or condo dues, flood insurance where required, and keeping the home in reasonable repair. Failure on any of these is a default under the loan terms and can ultimately trigger foreclosure — the same consequence as skipping payments on a conventional loan, just arriving by a different route. This is precisely what the lender's financial assessment probes before closing: whether your residual income can sustain those carrying costs indefinitely. Where the assessment finds a shortfall, the lender may require a Life Expectancy Set-Aside (LESA), an escrow-like carve-out from loan proceeds that pays taxes and insurance directly — which in a purchase transaction raises the cash you must bring, since set-aside dollars can't fund the price.
The interest side of the ledger also deserves clear eyes. Because nothing is paid monthly, interest and the 0.5% annual MIP compound onto the balance month after month — the balance rises over time rather than falling. The HECM for purchase calculator on this page is built to make that visible: enter the purchase price, age and expected rate, and it shows the cash you bring to closing and projects the loan balance every five years. In our example the balance starts at the $166,500 principal limit and, at 7% plus the 0.5% annual MIP, grows to $241,974 after 5 years, $351,659 after 10 and $742,726 after 20. Weigh that against the standard amortization math of a forward mortgage to see the two curves moving in opposite directions.
Program Rules and Where They Come From
Every program rule cited on this page — the age-62 floor, the 2% upfront and 0.5% annual mortgage insurance premiums, the monetary-investment source restrictions, the 60-day occupancy requirement, the counseling mandate, and the non-recourse guarantee — comes from HUD's governing documents for the HECM program, principally the HECM regulations and HUD Handbook 4000.1. The authoritative starting point is HUD's official HECM homepage, and the Consumer Financial Protection Bureau publishes plain-language explainers on reverse mortgage purchases at consumerfinance.gov. The Principal Limit Factor in the worked example, and in the calculator on this page, comes from HUD's published PLF table (on HUD's HECM page), looked up by the youngest borrower's age and the expected rate, rounded down to the table's nearest 1/8-point rate row. The 2% upfront and 0.5% annual premiums come from HUD Mortgagee Letter 2017-12, and the origination fee cap from 24 CFR 206.31 (24 CFR part 206). The calculator applies these to the price you enter, but only a lender pricing your specific age, rate, and property can produce a binding figure. Nothing here is financial, legal, or tax advice — an H4P decision reshapes your estate, so run the numbers with a HUD-approved counselor and, ideally, a fee-only financial planner before signing.

Sukie Gao
Sukie Gao builds independent mortgage calculators that show homeowners what a loan actually costs over time, from standard amortization schedules to HUD-based reverse mortgage estimates. MortgageAmortizationCalc.com is written and maintained by Sukie, with every formula checked by hand and every lending rule linked to the agency that sets it.
More from Sukie →Frequently Asked Questions
H4P is industry shorthand for HECM for Purchase — the variant of the FHA-insured Home Equity Conversion Mortgage that finances the purchase of a new primary residence and originates the reverse mortgage in a single transaction. Lenders and counselors use H4P, HECM for Purchase, and reverse mortgage for purchase interchangeably.
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Part of the reverse mortgage calculators collection.