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Recast vs HELOC: Lower the Payment or Pull Cash

RD By RecastDesk editors · Updated October 2026 · 7 min read

These two get compared because both involve home equity and both can change your monthly outgoings, but they point in opposite directions. A recast takes money you already own and applies it to the loan, reducing what you owe. A HELOC borrows against equity you have not accessed, increasing what you owe. Confusing them is how people end up with a second mortgage when they needed a smaller payment.

The short answer

If you have cash and want a lower payment, recast: it costs a few hundred dollars, adds no debt, and cannot reset to a higher rate. If you need cash and have equity, a HELOC is one of the cheaper ways to get it — but it is new borrowing at a variable rate, secured on your house.

The combination that usually makes no sense is borrowing on a HELOC in order to pay down the first mortgage. You would be replacing fixed-rate debt with variable-rate debt and keeping both liens.

What each one actually does

A recast re-amortises your existing first mortgage after a lump-sum principal payment. Balance down, rate unchanged, term unchanged, payment down, no new lien, no new credit.

A HELOC is a revolving line secured by a second lien. During the draw period — commonly ten years — you can borrow, repay and re-borrow, often paying interest only. After the draw period the line converts to a repayment schedule over the remaining term, typically twenty years, and the payment rises because principal now amortises.

One reduces a balance you already owe. The other creates a new one.

The cost comparison

A recast fee is typically $150 to $500, sometimes waived, occasionally higher. There is no appraisal in the standard process and no underwriting.

A HELOC usually carries modest closing costs — sometimes none if the lender absorbs them in exchange for a higher rate or an early-closure penalty — plus a variable interest rate that moves with the market. The cheap-looking HELOC is often the one with the annual fee and the three-year early-closure clause.

Neither number is large. The real cost difference is structural: the recast costs you liquidity, the HELOC costs you a lien.

When a recast is the right tool

You have the cash, the payment is the problem, and you do not need to borrow. That is the whole case, and it is common: a bonus, an inheritance, a business sale, or savings that grew during a period of low spending.

The recast is also the only one of the two that cannot hurt you if rates rise, because nothing about it is variable. The rate you have is the rate you keep.

When a HELOC is the right tool

You need money and you have equity. A renovation, a consolidation where the maths genuinely works, a bridge between selling and buying, or a large expense you want to spread rather than liquidate investments for.

It is a bad tool for lowering a mortgage payment. The only version of that trade that works is a HELOC at a materially lower rate than the first mortgage, used to pay it down — and that requires a fixed-rate first mortgage well above current HELOC pricing, which is not the normal state of the market.

The trade nobody prices properly

Borrowing at a variable rate to repay fixed-rate debt moves risk in the wrong direction. Your first mortgage is a known payment for a known number of months. A HELOC is a payment that resets with the prime rate, on a line the lender can freeze in a falling market — several lenders did exactly that in 2008 and again in 2020.

There is also a tax detail that surprises people: interest on a HELOC is deductible only where the funds are used to buy, build or substantially improve the home securing the loan. Using the money to pay down the first mortgage generally does not qualify, so the after-tax cost of the borrowing is higher than the headline rate suggests.

Worth knowing: A recast converts savings into a lower payment. A HELOC converts equity into a higher payment. If the two are on the same page of your comparison, one of them is being described wrongly.

What each one exposes you to

A recast leaves you with less liquid cash and a lower required payment. The risk is that the cash was your buffer — once applied, it is only recoverable by selling or borrowing, and borrowing later may be more expensive than the money you saved.

A HELOC exposes you to rate resets, to the end-of-draw payment shock when principal amortisation starts, and to the possibility of a frozen line at the moment you most need it. It also sits behind the first mortgage in a foreclosure, which is exactly why it is cheap: the lender's risk is low.

Can you use both?

Sequentially, yes, and it is sometimes sensible: recast with cash to get the payment down, then use a HELOC later for a specific project rather than drawing on investments. Doing both at once to solve one problem usually means neither was the right tool.

The version that never works is drawing on a HELOC to fund a recast. You would be adding a variable-rate second lien in order to reduce a fixed-rate first — the fee, the lien and the rate risk, all to move the same debt sideways.

Frequently asked questions

The questions that come up most often.

Q
Can I use a HELOC to pay down my mortgage and then recast?
You can, but it is rarely a good trade. Drawing at a variable rate to reduce a fixed-rate first mortgage adds a second lien and rate risk in exchange for a lower first-mortgage balance, and the recast fee is paid on top. The only version that works is a HELOC priced materially below your first mortgage rate — unusual, and never true for long.
Q
Does a recast require equity, like a HELOC does?
No. A recast does not lend against equity; it re-spreads a balance you already owe after you pay part of it down. There is no loan-to-value test, no appraisal and no new lien. A HELOC is entirely an equity calculation: how much of the home you own determines the line size.
Q
Which is cheaper, a recast or a HELOC?
Upfront, a recast — typically $150 to $500 with no appraisal. A HELOC may have low or no closing costs but usually carries a variable rate, sometimes an annual fee, and often an early-closure penalty. The comparison only becomes interesting if you actually need the borrowed money, in which case you are comparing borrowing costs rather than payment-reduction costs.
Q
Does a recast affect my ability to get a HELOC later?
It can help. A recast lowers your first-mortgage balance, which improves your combined loan-to-value ratio — the measure most HELOC lenders use to size the line. It also lowers your required monthly payment, which improves the debt-to-income calculation. The main trade-off is that the cash you applied is no longer available for the lender to see as reserves.
Q
Is HELOC interest tax deductible?
Only where the borrowed funds are used to buy, build or substantially improve the home that secures the loan. Using a HELOC to pay down the first mortgage, consolidate card debt or cover living expenses generally does not qualify, which makes the effective cost of that borrowing higher than the stated rate. Confirm your own position with a tax professional.
Q
Can the lender freeze my HELOC?
Yes, and they have, in 2008 and again in 2020. A lender can suspend draws when home values fall or when it decides the borrower's circumstances have changed materially. A recast cannot be frozen in that way — the principal is already applied and the new payment is contractual — which is a real, if unglamorous, advantage in a downturn.