Keep the first mortgage or replace it?
A cash-out refinance replaces the existing mortgage with a larger loan. A HELOC is a separate line of credit against home equity. Compare the cost of changing the whole mortgage with the cost of borrowing the additional amount separately.
| Question | HELOC | Cash-out refinance |
|---|---|---|
| Existing first mortgage | Generally stays in place | Replaced with a new mortgage |
| Repayment review | Check draw period, variable terms and later repayment | Check new term, payment and entire balance |
| Shopping focus | Credit-line fees, payment changes and total debt | Closing costs and the rate on the whole new loan |
Use the same goal in both scenarios
Suppose your goal is a specific renovation. Request estimates that deliver the same usable amount after fees, rather than comparing different gross loan amounts. Put the combined mortgage payments and cash required at closing next to each other.
Ask what happens if you borrow gradually, repay sooner than expected or need longer to repay. For a line of credit, ask about the payment during the draw period and after it ends. Do not assume the initial payment is permanent.
A lower monthly payment is only one result
Extending repayment can make a payment smaller while keeping debt outstanding longer. Compare the total amount paid and remaining balances at a date that matters to you, such as when you expect to sell.
If you use home equity to repay other debts, make a plan to avoid building those balances back up. The borrowing remains secured by your home. Include a scenario where income falls or a payment rises.
Bring these questions to your loan officer
- What are the total upfront charges and any early-closure or prepayment costs?
- What assumptions could change the payment later?
- How much of my current mortgage would be repriced?
- What will I owe after my planned repayment period?
- Does the plan still work without future appreciation or another refinance?
A few common questions
No. Keeping that mortgage can be valuable, but compare the line’s fees, rate, repayment terms and your expected borrowing pattern. Use written offers for the same funding goal.
No. A calculator compares assumptions. Your lender must verify income, credit, property, existing liens and program requirements.
Put the guidance to work
Compare seller concessions and temporary buydowns · Model rental cash flow · Compare a HELOC with cash-out refinancing
Open document checklist · Cash-to-close planner · Loan Estimate review
King County guide · Snohomish County guide · Washington local guides
Read the original sources
Program rules and lender requirements can change. Confirm current terms before acting.