Refinance vs HELOC Cash Flow Calculator
Compare the monthly cash flow impact of a cash-out refinance versus a HELOC to determine which option best preserves your monthly budget.
Refinance vs HELOC — Which Is Better for Cash Flow?
When you need to access home equity, two primary options exist: a cash-out refinance replaces your current mortgage with a larger loan at today's market rate, giving you cash at closing. A HELOC adds a second revolving credit line to your existing mortgage, leaving your first mortgage untouched. The cash flow impact of each option is dramatically different depending on your current rate versus today's market rate.
As of May 2026, 30-year fixed rates hover near 6.85%. Homeowners who locked in 3-4% rates in 2020-2021 would dramatically increase their total mortgage payment by refinancing. A HELOC at 8.5% on $60,000 adds roughly $425/month in interest-only payments — painful, but far less than losing a sub-4% rate on a $300,000 balance.
Refinance vs HELOC Comparison Table
| Factor | Cash-Out Refinance | HELOC |
|---|---|---|
| First mortgage | Replaced at new rate | Unchanged |
| Rate type | Fixed (usually) | Variable (usually) |
| Closing costs | 2-5% of loan ($4K-$12K) | $500-$2,000 |
| Best when | Current rate > new rate | Current rate < new rate |
| Draw period | None — lump sum only | 10 years (draw), 20 years (repay) |
| Interest deductible | Yes (if used for home) | Yes (only if used to improve home) |
Source: Consumer Financial Protection Bureau, IRS Publication 936. Last updated: May 2026.
HELOC Risks You Must Know
HELOCs carry variable interest rates tied to the prime rate. If the Fed raises rates, your HELOC payment rises. In 2022-2023, prime moved from 3.25% to 8.50% — HELOC borrowers saw payments nearly triple. As of May 2026, prime is at 7.50%, and HELOC rates typically run 1-2% above prime. Budget conservatively and consider whether you could absorb a 2% rate increase. HELOCs also have draw periods (typically 10 years) followed by repayment periods — the shift from interest-only to fully amortizing payments can be a payment shock. Plan ahead and use the HELOC for investments with a clear payoff timeline.
When Refinancing Wins
Refinancing wins when today's market rate is at least 0.75% below your existing rate, you need a large lump sum (not a revolving line), and you plan to stay in the home long enough to recoup closing costs (typically 24-48 months). It also wins when you want to lock in a fixed rate on all your debt with a single monthly payment and a predictable amortization schedule over 15-30 years.