If the HELOC stopped advancing, could you carry your payments? A lender may stop new draws or lower a limit on defined grounds. With no new draws, Loan B needs $5,778 a month against $6,500 of income at month 12, and Loan A needs $6,534 against $7,500. These are sizes, not probabilities: no likelihood of any event is given here. The home is the collateral, and extra payments have their own exposure: no line to fall back on.
Illustrative model, not financial, tax or legal advice. A HELOC is secured by your home. Results depend on your rate, fees, balance, term and cash flow and do not transfer to your loan.
What would you have to carry if new draws stopped? (the FREEZE test)
The test asks one thing: with no new draws, could you cover the mortgage payment, the HELOC payments and your expenses from income and cash on hand? The table sizes it for the two example loans at month 12 and month 36 (interest-only on the line balance; income, escrow and expenses as in the input table on the comparison page), using the same loans as the comparison page. You can run the same calculation on your own numbers in the Freeze tab of the spreadsheet.
| Loan B, month 12 | Loan B, month 36 | Loan A, month 12 | Loan A, month 36 | |
|---|---|---|---|---|
| Line balance | $41,700 | $22,976 | $38,775 | $14,204 |
| Line interest-only payment | $278 | $153 | $194 | $71 |
| Total monthly obligations | $5,778 | $5,653 | $6,534 | $6,411 |
| Take-home income | $6,500 | $6,500 | $7,500 | $7,500 |
| Monthly margin | $722 | $847 | $966 | $1,089 |
| Cash for 6 months with no income | $34,668 | $33,919 | $39,203 | $38,466 |
For comparison, the extra-payments path has no line to freeze and nothing to draw on. Its monthly obligations are the mortgage payment, escrow and expenses: $5,500 for Loan B and $6,340 for Loan A, so six months with no income needs $33,000 and $38,040. The HELOC path needs more only by the line’s interest. What it changes is what you can do next: the extra-payments path cannot draw on paid-in equity, and the HELOC path can only while the lender allows.
What a freeze does to the payoff itself, in this model, depends on the line’s rate against the mortgage rate. A freeze at month 12 or 36 stops the chunk from being redeployed. In Loan B, where the line costs more than the mortgage, that leaves the HELOC path finishing in 134 months at −$9,574 against extra payments (versus −$17,919 without a freeze). In Loan A it finishes in 149 months at $354. A freeze is a cash-flow risk before it is a cost risk.
The model treats a freeze as lasting to the end of the horizon. Under 1026.40(f)(3)(vi) a lender may restrict draws only “during any period in which” the ground exists, so a real freeze can end sooner. If you also run your pay through the line, parked pay is reachable only while the line advances: the cash-need rows above apply from the first month of a freeze, and the model does not simulate losing access to parked pay.
What happens if the HELOC rate rises 1, 2 or 3 points?
Only the HELOC path is exposed to a rate change, because the mortgage rate is fixed; if “chunk” and “HELOC path” are new terms, they are defined here. The line rates below are scenario inputs, not forecasts. “Immediate” applies the rise from month 1; the other column adds one point per year up to the stated total.
| Line rate change | Months to debt-free (immediate) | S2 minus S1 net position (immediate) | Months (+1 point per year) | S2 minus S1 (+1 point per year) |
|---|---|---|---|---|
| No change (8.0%) | 138 | −$17,919 | 138 | −$17,919 |
| +1 point | 140 | −$22,318 | 139 | −$21,391 |
| +2 points | 142 | −$26,747 | 141 | −$24,424 |
| +3 points | 144 | −$31,283 | 142 | −$26,806 |
| Line rate change | Months to debt-free (immediate) | S2 minus S1 net position (immediate) | Months (+1 point per year) | S2 minus S1 (+1 point per year) |
|---|---|---|---|---|
| No change (6.0%) | 149 | $1,847 | 149 | $1,847 |
| +1 point | 151 | −$3,414 | 150 | −$2,418 |
| +2 points | 152 | −$8,973 | 151 | −$6,195 |
| +3 points | 154 | −$14,770 | 152 | −$9,715 |
Loan A’s HELOC lead of $1,847 (which exists only because its line rate was set below the mortgage rate, as explained on the comparison page) turns into a deficit at +1 point (−$3,414). The extra-payments path does not move, because its mortgage rate is fixed and it has no variable balance. That is a structural difference, not a two-sided comparison: only the HELOC path is exposed to this shock.
What may a lender do, and under which rule?
Three separate provisions of Regulation Z apply to home equity plans. Freezing or lowering a limit is a different provision from terminating the plan and demanding the whole balance. The text below is copied from 12 CFR 1026.40 and 1026.9; read the current text on eCFR before relying on it. The contract’s own terms also apply.
| Provision | What it covers |
|---|---|
| 1026.40(f)(3)(vi) | A creditor may “prohibit additional extensions of credit or reduce the credit limit applicable to an agreement during any period in which”: (A) “the value of the dwelling that secures the plan declines significantly below the dwelling’s appraised value for purposes of the plan”; (B) “the creditor reasonably believes that the consumer will be unable to fulfill the repayment obligations under the plan because of a material change in the consumer’s financial circumstances”; (C) “the consumer is in default of any material obligation under the agreement”; (D) “the creditor is precluded by government action from imposing the annual percentage rate provided for in the agreement”; (E) “the priority of the creditor’s security interest is adversely affected by government action to the extent that the value of the security interest is less than 120 percent of the credit line”; or (F) “the creditor is notified by its regulatory agency that continued advances constitute an unsafe and unsound practice.” |
| 1026.9(c)(1)(iii) | “If the creditor prohibits additional extensions of credit or reduces the credit limit pursuant to § 1026.40(f)(3)(i) or (f)(3)(vi), the creditor shall mail or deliver written notice of the action to each consumer who will be affected. The notice must be provided not later than three business days after the action is taken and shall contain specific reasons for the action. If the creditor requires the consumer to request reinstatement of credit privileges, the notice also shall state that fact.” |
| 1026.40(f)(2) | A creditor may not “terminate a plan and demand repayment of the entire outstanding balance in advance of the original term” unless: (i) “there is fraud or material misrepresentation by the consumer in connection with the plan”; (ii) “the consumer fails to meet the repayment terms of the agreement for any outstanding balance”; (iii) “any action or inaction by the consumer adversely affects the creditor’s security for the plan, or any right of the creditor in such security”; or (iv) federal law on credit extended to executive officers of a depository institution requires it, if the initial agreement includes that provision. |
The provisions above are not the full picture: they apply to plans covered by section 1026.40, and section 1026.40(f)(3) generally limits what a creditor may change during the plan. This page does not tell you whether a given lender’s action was allowed.
What happens when the draw period ends?
After the draw period, repayment starts on whatever balance is still on the line. As a scenario, assume draws end at month 120 and the balance amortizes over 240 months at the same rate. The interest-only payment during the draw period is shown for comparison.
| Loan B | Loan A | |
|---|---|---|
| Line balance at month 120 | $2,982 | $28,893 |
| Interest-only payment before | $19.88 | $144.47 |
| Amortizing payment after (240 months) | $24.94 | $207.00 |
| Monthly surplus | $1,000 | $1,160 |
In these examples the amortizing payment is small next to the surplus. It would be larger if the line carried a bigger balance at that point, for example after a late redeploy. Your draw and repayment lengths are set in your agreement, not by the values above.
What if you lose your income while carrying a balance?
The FREEZE table above sizes it: six months with no income needs $34,668 (Loan B) or $39,203 (Loan A) at month 12 on the HELOC path, and $33,000 or $38,040 on the extra-payments path. A HELOC is secured by the home (Regulation Z covers plans “secured by the consumer’s dwelling”), so the balance is a claim on the house, and a lender may stop new draws if it reasonably believes you will be unable to fulfill your repayment obligations because of a material change in your financial circumstances (ground B above). This page gives no default or foreclosure probabilities.
A note on taxes
This page reaches no tax conclusion. The IRS says in Publication 936 (2025 returns edition, read September 20, 2026) that “you can no longer deduct the interest from a loan secured by your home to the extent the loan proceeds weren’t used to buy, build, or substantially improve your home.” How that applies depends on how the proceeds are used and traced (see IRS Publication 936). The 2025 edition does not itself say whether the limit changes after 2025, so check the edition for the year you file. Ask a CPA or an enrolled agent.
Frequently asked questions
What happens if my HELOC rate goes up?
The tables above show the rate-rise cases for two example loans. Only the HELOC path is exposed; the extra-payments path is unchanged by construction.
Can a bank freeze my HELOC while I am paying down my mortgage?
Regulation Z section 1026.40(f)(3)(vi) lets a lender prohibit additional extensions of credit or reduce the credit limit on the listed grounds, with written notice not later than three business days after the action under section 1026.9(c)(1)(iii). Terminating the plan and demanding the balance is a separate rule, section 1026.40(f)(2).
What happens when the draw period ends?
Repayment starts on the remaining balance. The amortizing-payment table above sizes it for two example loans.
What if I lose my income while carrying a HELOC balance?
See the six-months-without-income row above. The home is the collateral. No probabilities are given.
Sources and method
- Model RM-1.1 run of September 20, 2026; same inputs as the comparison page. Line rates, fees, draw and repayment lengths are scenario inputs.
- Regulation text: 12 CFR 1026.40 and 12 CFR 1026.9, as read on eCFR (issue of September 17, 2026). Read the current text before relying on it; contract terms also apply.
- Limits: this page is the highest-stakes page, so plainly: a second-person review of the model is still open; the rate-shock, freeze and draw-end outputs are not covered by the second-script cross-check, which reproduces only the S1 and S2 headline results; and every line rate, fee, draw length and repayment length here is a scenario input.
- Tools: the spreadsheet’s Freeze tab does this arithmetic. Our Velocity Mortgage App has a chunk tracker for subscribers that keeps a record of chunks and balances; it does not compute the FREEZE test.
- Tax: IRS Publication 936 (2025 returns edition), read September 20, 2026; only the sentence quoted is used.
- Run your own numbers, including the Freeze tab: the spreadsheet. The three tests: overview.
About the Author Michael
MBA in Quantitative Finance – Wharton School (University of Pennsylvania)."I built products for the banks. Now, I dismantle them for you."Michael Schmidt is a veteran financial strategist and the architect of the Mortgage Killer Method.With over 15 years of experience inside America's largest lending institutions, Michael worked behind closed doors structuring mortgage backed-securities. He saw firsthand how the "30-year fixed" system is engineered to prioritize institutional profit over homeowner equity.In 2015, Michael walked away from Wall Street with a clear objective: to reverse-engineer banking mathematics for the average American family. He specializes in aggressive principal reduction strategies, using HELOCs to cut amortization timelines by decades.Michael brings German precision to debt management. His frameworks are not theories—they are mathematical certainties. To date, he has helped over 1,500 families reclaim an estimated $50 million in interest from the banking system.Expertise: Strategic Debt Elimination, Amortization Mechanics, Cash Flow Optimization.Background: Former VP of Lending Strategies.
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