HELOC vs. Cash-Out Refinance Calculator

Compare keeping your low mortgage rate with a HELOC vs. refinancing at today's rates.

Your Current Mortgage
$
%
yrs
New Cash Requirements
$
This is the money you want to take out for renovations, debt consolidation, etc.
Scenario A: Cash-Out Refinance
%
$
yrs
Scenario B: HELOC
%
yrs

Years to pay off the HELOC

HELOC vs. Cash-Out Refinance: The Rate Decision

If you locked in a low mortgage rate in 2020-2021 (under 4%), doing a cash-out refinance at today's higher rates could cost you thousands. A HELOC lets you access equity while keeping your low first mortgage rate intact.

Cash-Out Refinance

How it works: Replace your existing mortgage with a new, larger loan. The difference is paid to you in cash.

Pros:

  • Single fixed-rate loan
  • Predictable payments
  • Potentially lower rate than HELOC
  • Can extend loan term to lower payments

Cons:

  • Lose your current low rate
  • Higher closing costs ($3,000-$6,000)
  • Restart your mortgage term
  • Pay interest on entire balance, not just what you need

HELOC (Second Mortgage)

How it works: Add a second lien on your home as a revolving credit line.

Pros:

  • Keep your low first mortgage rate
  • Lower closing costs ($0-$500)
  • Only pay interest on what you use
  • Flexibility to borrow as needed

Cons:

  • Variable rate (typically higher than first mortgage)
  • Two separate payments
  • Payment can increase if rates rise

The Breakeven Analysis

Example Scenario:
Current Mortgage: $300,000 at 3.5%
Need to Access: $50,000

Option 1 - Cash-Out Refi:
New Loan: $350,000 at 7.0%
Payment: $2,329/month

Option 2 - Keep Mortgage + HELOC:
First Mortgage: $300,000 at 3.5% = $1,347/month
HELOC: $50,000 at 8.5% = $354/month (interest-only)
Total: $1,701/month

Savings with HELOC: $628/month or $7,536/year

When Cash-Out Refinance Makes Sense

  • Your current rate is above 6%
  • You can get a lower rate than your current mortgage
  • You want to consolidate all debt into one payment
  • You prefer fixed-rate stability

Current Rate References

Expert Tips for Smart Borrowing

🔐Pro Tip

Protect the 3%

If your current mortgage rate is under 4%, simpler is better: Keep that loan. Use a HELOC or HELOAN for the cash you need. Don't sacrifice a historic low rate.

⚖️Pro Tip

Calculate the 'Blended Rate'

Don't just look at the HELOC rate (e.g., 9%). Changes are your blended rate (Old Mortgage + New HELOC) is still much lower than a new refinance rate.

⏱️Pro Tip

Closing Cost Break-Even

A Refi might cost $8,000 to close. A HELOC might cost $0. Ask yourself: How long does it take for the slightly lower rate of a Refi to earn back that $8,000?

🔄Pro Tip

The 'Recast' Option

Instead of refinancing, ask your current lender to 'recast' your mortgage if you make a large lump sum payment. It lowers payments without resetting your rate.

Frequently Asked Questions

The main reason is to protect your low rate on your primary mortgage. If you have a 3% mortgage from 2021, you do NOT want to refinance the whole thing at today's 6-7% rates just to get cash. A HELOC allows you to keep the 3% loan and only pay the higher rate on the new cash you borrow.
Yes, significantly. A Cash-Out Refi replaces your entire mortgage, involving title insurance, origination fees, etc., costing 2-5% of the TOTAL loan. HELOC closing costs are often near zero or just a few hundred dollars.
If current mortgage rates are lower than your existing rate (rare right now), OR if you need a huge sum of money and want a fixed payment for 30 years without the variable-rate risk of a HELOC.
Generally, yes, under the 2017 Tax Cuts and Jobs Act, interest on 'home acquisition debt' (money used to buy, build, or substantially improve the home) is deductible. Whether it's a HELOC or Refi doesn't matter as much as *what you use the money for*.
Technically yes, but it's complex. You would refinance your first mortgage (Cash-Out) and then open a HELOC behind it. Most people maximize the Cash-Out first because primary mortgage rates are lower than HELOC rates.