Quick answer
A HELOC works well for renovations because you draw money as each bill comes due and pay interest only on what you've used. At an example 7.25% rate, an $80,000 project costs about $483 a month interest-only once fully drawn, or about $939 a month to pay it off over 10 years. The trade-offs: the rate is variable, and the loan is secured by your home.
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Example rate only. Your actual rate depends on your credit, combined loan-to-value (CLTV) and line amount, and HELOC rates are variable. Estimates are not a loan offer; all loans subject to credit approval and underwriting.
Why a HELOC fits a renovation
Renovations rarely cost one lump sum on one day. You pay a deposit, then a payment when the rough work is done, then another when cabinets or fixtures go in, and a final check at the end. Somewhere along the way there's usually a surprise behind a wall.
A HELOC matches that pattern. You get a credit line, draw only what each stage costs, and pay interest only on the amount you've actually drawn. If the project comes in under budget, the unused part of the line costs you nothing in interest. If it runs over, the room is already there without a new application.
Compare that with a loan that pays out the full amount at closing. You'd start paying interest on all of it from day one, even on money sitting in your checking account waiting for the contractor to finish.
HELOC vs. other ways to pay
| Option | How you get the money | Rate | Best fit |
|---|---|---|---|
| HELOC | Draw as needed from a credit line | Usually variable | Projects paid in stages, uncertain final cost |
| Home equity loan | Lump sum at closing | Usually fixed | One known cost and you want a fixed payment |
| Cash-out refinance | Replaces your first mortgage with a larger one | Fixed or adjustable | When today's rates beat your current mortgage rate |
| Personal loan | Lump sum, not secured by the home | Usually fixed, often higher | Smaller projects, little equity, fast funding |
| Credit card | Revolving credit | Usually much higher | Small purchases you can pay off within a month or two |
If you locked a low rate on your first mortgage, a cash-out refinance means giving up that rate on your whole balance just to fund the project. That's why most homeowners with a good first mortgage look at a HELOC or a home equity loan instead. Both leave your first mortgage alone.
How much can you borrow?
Most lenders cap your total borrowing against the home, first mortgage plus HELOC, at a percentage of its value called combined loan-to-value (CLTV). Many programs allow up to 80% to 90%.
Example: $600,000 home value × 85% = $510,000. Subtract a $300,000 mortgage balance and the line could be up to $210,000.
Your credit, income and the property itself also decide the final number. The HELOC calculator runs this math with your own numbers.
One thing worth knowing: a few lenders offer renovation loans based on the home's value after the work is done. A standard HELOC is based on today's value, so plan the project around the equity you have now.
Paying the contractor in stages
Here's how the interest works on an example $80,000 kitchen paid in three stages over six months at an example 7.25% rate:
| Months | Drawn so far | Interest-only payment |
|---|---|---|
| 1–2 (deposit and demolition) | $30,000 | about $181/mo |
| 3–4 (rough-in and cabinets) | $60,000 | about $363/mo |
| 5–6 (finishes and final payment) | $80,000 | about $483/mo |
Interest over those six months comes to about $2,054. Borrowing the full $80,000 on day one at the same rate would cost about $2,900 over the same stretch. The difference isn't huge, but you also keep the flexibility if the project changes.
Example figures only, rounded. Your rate, draws and payments will differ.
The bigger risk is the habit, not the math. Interest-only payments feel small. If you only ever pay interest, the balance never goes down. Once the project is done, treat the HELOC like a loan with a payoff date. Use the calculator above to pick a timeline and pay at least that much each month.
Projects worth borrowing for (and ones to skip)
Usually good uses of home equity:
- Repairs that protect the house: a roof, HVAC, plumbing, foundation or water damage. Putting these off tends to make them more expensive. (See our roof replacement example.)
- Projects that add usable space you'll actually use, like a finished basement, a bedroom or an accessory dwelling unit.
- Updates you'd need anyway before selling, especially in an older kitchen or bathroom.
- Energy upgrades that lower monthly bills. See HELOCs for solar panels.
Think twice about:
- High-end finishes you're choosing mainly for resale. Not every dollar comes back when you sell.
- Projects with no clear budget or contractor yet. Get bids first, then size the line.
- Anything you'd struggle to pay for if rates went up. HELOC rates are variable.
Timing: apply before you sign
Apply for the HELOC before you sign a contract or start demolition. Lenders value the home as it is, and a house mid-renovation with the kitchen torn out can complicate the valuation.
From application to funding usually takes a few weeks, sometimes less with a fast lender. See how long a HELOC takes to close. Once the line is open, it sits there until you need it.
I also suggest planning a cushion of 10% to 20% above the contractor's bid for surprises. Having it available in the line is better than finding it on a credit card later.
Is the interest tax deductible?
Possibly. Under current federal rules, HELOC interest may be deductible when the money is used to buy, build or substantially improve the home that secures the loan, you itemize, and your total mortgage debt stays within the IRS limits. Interest on HELOC money used for other things, like paying off credit cards, generally isn't deductible. Keep your contractor invoices and draw records. More detail in Is HELOC interest tax deductible?
This is general information, not tax advice. Talk with a CPA or tax professional about your own situation before you rely on any deduction.
Risks to weigh
- Your home secures the line. Falling behind on payments puts the house at risk.
- The rate is variable. If rates rise, your payment rises. See how often HELOC rates change.
- The payment can jump later. When the draw period ends, payments switch to principal and interest. See what happens when the draw period ends.
- A lender can freeze or reduce an unused line if home values drop or your credit changes. Draw what the project needs when you need it, rather than counting on unused credit years later.
FAQ
Is a HELOC or a home equity loan better for a renovation?
A HELOC usually fits projects paid in stages or with an uncertain final cost, because you only pay interest on what you draw. A home equity loan fits a single known cost when you want a fixed rate and payment from day one.
Can I use a HELOC to pay my contractor directly?
Usually yes. Most HELOCs let you transfer money to your checking account or write checks from the line, so you can pay each invoice as it comes due.
How much does it cost to open a HELOC?
Costs vary by lender and can include appraisal, title and origination fees, and some lenders cover these. See how much a HELOC costs.
Can I get a HELOC if I'm self-employed?
Yes. Some programs qualify you with bank statements, a P&L or 1099s instead of tax returns. See self-employed HELOC options.
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