Both a Home Equity Loan (HEL) and a Home Equity Line of Credit (HELOC) let you convert a portion of your home's equity into cash. On the surface they sound similar — both are secured by your house, both charge interest, and both show up as second liens on your title. But structurally they behave completely differently, and the "right" choice for a $75,000 kitchen renovation can be the wrong choice for a $75,000 emergency fund. This calculator does the math on all three key dimensions: what you pay each month, what you pay in total over the life of the loan, and what happens to those numbers if interest rates rise.
Step 1 — Establish your available equity
The first number the calculator establishes is how much equity you can actually access. Most lenders cap the combined loan-to-value ratio (CLTV) at 85%. That means if your home is worth $500,000 and you owe $250,000 on your first mortgage, the most you can borrow is ($500,000 × 85%) − $250,000 = $175,000. This is your ceiling. The calculator surfaces this number immediately so you know whether your requested loan amount is realistic before comparing products.
Step 2 — Calculate the Home Equity Loan
For the Home Equity Loan, the math is straightforward: a fully amortizing loan at a fixed rate. You enter the rate and term, and the calculator applies the standard loan payment formula. On $50,000 at 7.5% for 10 years, that produces a payment of $593.51 per month — every month, forever, until the loan is paid off. The payment never changes. The total interest is $21,221 over the life of the loan. This predictability is the product's defining advantage.
Step 3 — Model the HELOC in two distinct phases
The HELOC calculation is more nuanced because it has two phases. During the draw period (typically 10 years), you pay interest-only on the amount you've drawn. The calculator assumes you draw the full requested amount on day one — a conservative assumption that gives you the worst-case draw payment. On $50,000 at 8.0%, that draw payment is $333.33/month. Importantly, the full $50,000 balance remains outstanding throughout the draw period because no principal is being repaid. When the draw period ends, that $50,000 converts to a fully amortizing loan over the repayment period, producing a higher principal-plus-interest payment.
Step 4 — Model the rate-rise scenario
This is where the calculator earns its keep. HELOC rates are variable, tied to the Prime Rate plus a margin. The Prime Rate has swung 5+ percentage points within a single economic cycle (2021–2023). The calculator models three scenarios for how much the HELOC rate rises between now and the start of the repayment period: conservative (+1%), moderate (+2%), and aggressive (+3%). These bumps are applied to the repayment-period payment only — a realistic model of how HELOC rate resets work in practice. The Home Equity Loan column doesn't change — its rate is locked.
Step 5 — The recommendation engine
Beyond raw numbers, this calculator considers your intent. Emergency fund? The HELOC wins because you only pay when you actually draw — and if a true emergency never strikes, you owe nothing. Debt consolidation? The Home Equity Loan wins because its fixed structure provides discipline that a revolving HELOC credit line doesn't. Variable income? The Home Equity Loan wins because a HELOC's rate-driven payment volatility is dangerous when your income itself fluctuates. The recommendation engine weighs five dimensions — cost, flexibility, risk, predictability, and tax treatment — and gives you a score matrix for each so you can see exactly how the comparison was made.
Worked example: $50,000, salaried homeowner, kitchen renovation
Home Equity Loan at 7.5% for 10 years: $593/month, $21,221 total interest, fixed forever. HELOC at 8.0% draw / +2% moderate scenario: $333/month during draw, then $482/month in repayment. Total interest (base): $19,760. Total interest (+2% scenario): $25,880 — $4,659 more than the HEL. Recommendation: For a known renovation budget, the Home Equity Loan gives you certainty and competes on cost once rate risk is factored in.