HECM line of credit in 1970: the growing credit line that cannot be cancelled
Last updated: · Reviewed by Simply Approved Mortgages (NMLS #2620881)
The HECM line of credit is the single most powerful — and most misunderstood — feature of a reverse mortgage. The unused balance grows every month at the note rate plus the 0.5% annual MIP, the lender cannot freeze or cancel it, and you only pay interest on what you actually draw. This 2026 guide explains how the growth math works, why opening early matters, and how the credit line compares to a HELOC.
Reviewed for accuracy by the Reverse Mortgage Division of Simply Approved Mortgages
Simply Approved Mortgages NMLS #2620881 · Independent reverse mortgage brokerage licensed to originate HECM loans
Last reviewed: January 1, 1970
What is a HECM line of credit?
A HECM line of credit is a federally insured, growing credit line built into an adjustable-rate Home Equity Conversion Mortgage. After closing, the portion of your Principal Limit that you have not drawn sits in an available credit line. Each month, the unused balance grows at the current note rate plus the 0.5% annual mortgage insurance premium — and you only owe interest on the portion you actually withdraw.
The growth rate is contractual, not a market promise. It happens whether home values rise or fall, whether the stock market crashes or booms, and whether the lender wants to keep the line open or not — they have no authority to cancel it under HUD's HECM rules.
Source: HUD — HECM Program
HECM line of credit vs HELOC
| Feature | HECM line of credit | HELOC |
|---|---|---|
| Can the lender cancel or freeze it? | No — federally protected | Yes — happens in downturns |
| Does the unused balance grow? | Yes — note rate + 0.5% annual MIP | No |
| Required monthly payment | None (must pay taxes/insurance) | Interest-only during draw, then P&I |
| Minimum age | 62 | 18+ |
| Credit qualification | Financial assessment only | Full credit + income underwriting |
| Draw period | Lifetime — as long as you live in home | Typically 10 years |
| Rate type | Adjustable (CMT + margin) | Variable (Prime + margin) |
Benefits of a HECM line of credit
Cannot be cancelled or frozen
Even in a 2008-style housing crash, HUD's HECM line stays open. HELOCs get frozen first.
Grows automatically
The unused balance grows monthly at the current note rate + 0.5% MIP — every year you wait to use it, the credit line gets bigger.
Only pay interest on what you draw
Interest does not accrue on the unused portion. You can sit on a $300,000 credit line for 10 years without accruing a penny of interest.
Tax-advantaged draws
Draws are loan proceeds, not income — generally not considered taxable income and do not affect Social Security or Medicare.
Longevity hedge
Most retirees need MORE access in their 80s, not their 60s. The growing credit line is built for that.
Revolving — repaid amounts restore
Voluntary repayments reduce the balance and typically restore to available credit (no prepayment penalty).
The math: opening at 62 vs waiting until 75
Two homeowners, same $500,000 paid-off home. Borrower A opens an adjustable-rate HECM at 62 with an initial credit line of roughly $190,000 and draws nothing. Borrower B waits until 75 to apply.
At a 7% note rate + 0.5% MIP = 7.5% growth rate, Borrower A's credit line at age 75 has grown to roughly $485,000. Borrower B, applying fresh at 75, qualifies for a Principal Limit of roughly $280,000–$310,000 (higher PLF at older age, but no compounded growth).
Borrower A has $175,000+ more borrowing capacity at age 75 — without paying a penny of interest, because none of the credit line was drawn. This is the single most important reason to consider opening a HECM line of credit early and letting it grow.
Run your own numbers with the reverse mortgage calculator.
Illustrative example only. Actual figures depend on age, home value, current expected rate, and HUD lending limits at closing.
Expert insight from Simply Approved Mortgages
The HECM line of credit is the closest thing in the U.S. financial system to a contract that pays you to wait. The lender literally cannot take it away, the unused portion grows at a rate that beats most short-term Treasury yields, and you only pay interest when you actually need the money.
Yet most TV-advertised reverse mortgages push the fixed-rate lump sum — because it pays the lender a larger origination commission. For most borrowers without a large existing mortgage to retire at closing, the adjustable-rate HECM with a growing line of credit is the better product by a wide margin.
Simply Approved Mortgages NMLS #2620881. Reverse mortgage loans funded by third-party HUD-approved HECM lenders.
See how big your HECM line of credit could be
Every situation is different — your age, your home value, your existing mortgage, your retirement goals, and your heirs all matter. A Simply Approved Mortgages reverse mortgage specialist will walk you through your numbers in plain English, explain HUD counseling, and lay out the alternatives so you can make an informed decision. No pressure, no obligation, no hard credit pull.
- • Personalized HECM estimate based on your actual age and home value
- • Complimentary home value estimate when you provide your address
- • Side-by-side comparison of HECM vs. HELOC vs. cash-out refinance vs. downsizing
- • Help scheduling independent HUD-approved counseling
HECM line of credit — FAQ
- What is a HECM line of credit?
- A HECM line of credit is one of the payout options on an adjustable-rate Home Equity Conversion Mortgage. The unused portion of your Principal Limit sits in a credit line you can draw from any time — and the unused balance grows monthly at the current note rate plus the 0.5% annual MIP.
- How does the HECM line of credit grow?
- Each month, the unused credit-line balance is multiplied by (note rate + 0.5% MIP) ÷ 12. That growth is added to the available credit line. Over 15 years, a credit line opened in your early 60s can more than double — a powerful longevity hedge even if home prices stay flat or fall.
- Can the lender cancel or freeze my HECM line of credit?
- No. Unlike a HELOC, a HUD-insured HECM line of credit cannot be frozen, reduced, or cancelled by the lender — even if home values fall or interest rates rise. The growth and availability are contractual and federally backed.
- When should I open a HECM line of credit?
- The earlier the better — within HUD's eligibility rules (age 62+). The credit line grows at the same rate whether you use it or not, so opening at 62 and not drawing until 75 produces a substantially larger borrowing capacity than waiting until 75 to apply.
- Do I pay interest on the unused line of credit?
- No. Interest only accrues on the portion of the credit line you have actually drawn. The unused balance grows at the growth rate but does NOT accumulate interest until drawn.
- Is the HECM line of credit better than a HELOC?
- For most seniors, yes — the HECM line cannot be cancelled, grows automatically, and has no required monthly payment as long as you meet your loan obligations. A HELOC has lower rates but requires monthly payments, can be frozen, and ends after the draw period. HELOCs are better only for short-term borrowing.
- Can I pay back what I draw from the credit line?
- Yes. There is no prepayment penalty on a HECM. Voluntary payments reduce the outstanding balance, and the repaid amount typically restores to your available credit line (it's revolving).
- What if interest rates rise — does my credit line still grow?
- Yes, and it grows faster. The growth rate is the current note rate (which moves with the index) plus the 0.5% annual MIP. Rising rates accelerate credit-line growth — one of the few financial products where rising rates help the borrower.
- How is the HECM line of credit different from the tenure payment?
- A tenure payment converts your Principal Limit into equal monthly payments for as long as you live in the home as your principal residence. The line of credit leaves the funds in a growing credit line you draw from on demand. Most borrowers blend the two — partial tenure for predictable income, the rest in the credit line for flexibility.
- Is the HECM line of credit available on fixed-rate HECMs?
- No. The line-of-credit feature (and its growth) is only available on adjustable-rate HECMs. Fixed-rate HECMs require a single lump-sum disbursement at closing with no credit line. This is the main reason most borrowers without a large mortgage to retire choose the adjustable-rate HECM.
Keep learning about reverse mortgages
- Reverse mortgage rates
How the growth rate is calculated.
- Reverse mortgage calculator
Estimate your initial credit line.
- HECM program details
The FHA-insured reverse mortgage.
- Alternatives
HELOC, cash-out refi, and downsizing compared.
- Pros and cons
Balanced look at the trade-offs.
- Reverse mortgage calculator
Estimate your proceeds.
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Documents required for a reverse mortgage
When you apply for a HECM reverse mortgage, your lender will request documents that verify your identity, property ownership, income, and assets. Gathering these in advance can speed up your estimate and application.
- Government-issued photo ID
Current driver’s license, passport, or state-issued ID.
- Social Security number verification
Social Security card or award letter showing your SSN.
- Current mortgage statement
Most recent statement if refinancing; purchase agreement if buying.
- Homeowner’s insurance declarations page
Shows current coverage, premium, and mortgagee clause.
- Property tax statement or receipt
Latest county tax bill showing taxes are current or payment history.
- Bank statements
Last 1-2 months to verify closing funds and residual reserves.
- Investment or retirement accounts
Recent statements for IRA, 401(k), brokerage, or other liquid assets.
- HOA or condo information
Homeowners association statement or condo questionnaire if applicable.
- Trust or title vesting documents
Required when the home is held in a living trust or entity.
- Flood insurance declaration
Current policy if the property is in a flood zone.
- HUD-approved counseling certificate
Required before loan application. Obtained from a HUD-approved reverse mortgage counselor.
Why we pull credit for your reverse mortgage pre-approval
HUD requires a Financial Assessment for every HECM reverse mortgage. That includes a tri-merge credit report so we can verify your identity, review your obligations, and confirm you can continue paying property taxes, homeowners insurance, and maintenance after closing.
Pay for your credit report — SmartPay
Simply Approved Mortgages uses MeridianLink SmartPay to securely collect the credit report fee for your reverse mortgage pre-approval. Payment goes directly to the credit vendor — not to us — and unlocks your tri-merge report (Equifax, Experian, TransUnion) so your specialist can complete your HUD Financial Assessment.
- Secure, PCI-compliant checkout hosted by MeridianLink
- Required for a formal HECM pre-approval decision
- Soft-touch process — your loan officer will guide you through it
You'll be redirected to cic.meridianlink.com (SmartPay).
Check your credit first — $1 trial at MyITINCredit
Before you apply, it's smart to know exactly where your credit stands. MyITINCredit offers a $1 trial for 15 days that includes all three credit reports and scores (Equifax, Experian, TransUnion), plus ongoing credit monitoring so you can catch errors, dispute inaccuracies, and watch for identity theft.
- See all 3 bureau reports & scores before your lender does
- Ongoing monitoring alerts you to new accounts or score changes
- Fix errors early — cleaner credit can widen your reverse mortgage options
You'll be redirected to myitincredit.com. Third-party service — terms apply.
Credit report fees are paid directly to the credit vendor. Simply Approved Mortgages (NMLS #2620881) does not profit from the credit pull. MyITINCredit is an independent third-party service; pricing, terms, and features are set by that provider.
Have Questions? Talk to a Reverse Mortgage Specialist
Prefer a real conversation? A Simply Approved Mortgages reverse mortgage specialist can walk you through HECM rules, payout options, and how a reverse mortgage fits your retirement plan — no pressure, no obligation.