A HELOC and a home equity loan both use your home as collateral, but they hand you the money in opposite ways: a HELOC is a revolving line you draw from as needed, usually at a variable rate, while a home equity loan is a single lump sum repaid in fixed installments, usually at a fixed rate. Which one fits depends on what you are paying for and how certain the amount is.

At a glance

Both are secured by your home. Missing payments on either can lead to foreclosure.

When a HELOC fits

Choose the line when the total cost is uncertain or spread over time: a multi-year renovation done in stages, education costs paid term by term, or a business need that rises and falls. You pay interest only on what you have actually drawn, so an undrawn line costs nothing in interest — though some lines carry an annual fee. The trade-off is discipline: the interest-only years feel cheap, and the repayment years do not. Budget for the second payment from the start, and treat voluntary principal payments during the draw period as the cheapest insurance you can buy.

When a lump sum fits

Choose the loan when the amount is known and the schedule is fixed: paying off a specific debt, one renovation with a signed contract price, or a single large purchase. You get the whole amount at once, the payment is fixed, and the end date is certain. The trade-off is the reverse of the HELOC’s: you pay interest on the full amount from day one, even on money you have not spent yet, and borrowing more later means a new application.

Same $50,000 need, both paths

Suppose you need $50,000. As a HELOC draw at an example rate of 8.50%, the interest-only payment is $354.17 a month during the draw period; when repayment begins over 20 years, the payment becomes $433.91 a month. As a fixed loan at an example rate of 7.00% over 15 years, the same $50,000 costs $449.41 a month from day one, with $30,894.54 of total interest. The HELOC starts cheaper and ends less predictable; the loan starts higher and never changes. Neither is universally cheaper — the HELOC wins if you repay early or draw less, the loan wins if rates rise or you want certainty.

Can you have both, or switch later?

Yes, in principle: some homeowners hold a small HELOC for flexibility alongside other borrowing, and a HELOC balance can sometimes be refinanced into a fixed loan when the draw period ends. Both moves need a new approval, a fresh valuation, and new fees, and the combined borrowing still has to fit the lender’s LTV cap. Switching is a plan, not a guarantee — never take a HELOC on the assumption that a cheap fixed refinance will be available when repayment starts.

A simple decision rule

If you can state the amount and the date you need it, take the lump sum. If you cannot state either — the project will take years, the total is genuinely unknown, or you want a standby reserve — take the line, but size it by the repayment payment, not the interest-only payment. And if the repayment payment would strain your budget, the borrowing is too big under either product.

All payments recomputed from the interest-only and amortization formulas. Example rates are illustrations, not quotations. Individual lenders’ caps, margins, fees, and approval rules govern any real application.