Should You Refinance Your Mortgage? The Break-Even Math

Should You Refinance Your Mortgage? The Break-Even Math - US Money Guide

Refinancing replaces your current mortgage with a new one, usually to get a lower rate, change the loan term or tap home equity. It can save you tens of thousands of dollars, but it also comes with closing costs and trade-offs. This guide explains how refinancing works, how to calculate whether it makes sense and which pitfalls to avoid.

What Is a Mortgage Refinance?

When you refinance, a new lender pays off your old loan and you start a new one with new terms. You pay closing costs, usually between 2 and 6 percent of the loan amount, though some lenders offer reduced-cost options. The most common reasons to refinance include:

  • Lowering your interest rate and monthly payment.
  • Shortening the term, for example from 30 years to 15, to save interest.
  • Switching from an adjustable rate to a fixed rate.
  • Removing private mortgage insurance once you have enough equity.
  • Cash-out refinancing, which turns equity into cash.

Types of Refinances

Rate-and-Term Refinance

You change the interest rate, the loan term or both without taking cash out. This is the most common type for people seeking savings.

Cash-Out Refinance

You borrow more than you owe and receive the difference in cash. It can fund renovations or debt payoff, but it increases your loan balance and risk. Rates and fees can be higher than for rate-and-term refinances.

Streamline Refinance

Government-backed loans such as FHA, VA and USDA offer simplified refinance options with reduced paperwork. Eligibility rules apply.

The Break-Even Calculation

The key question is how long it takes for monthly savings to repay the closing costs. Divide your total closing costs by your monthly savings.

ItemExample
Current loan balance$300,000
Current rate and payment (P and I)7.0% and about $1,996
New rate and payment (P and I)6.0% and about $1,799
Monthly savingsAbout $197
Closing costs$6,000
Break-even pointAbout 30 months

If you plan to stay in the home longer than the break-even period, refinancing may make sense. If you might move sooner, it may not. This calculation does not include the effect of restarting the clock on a 30-year loan, so also compare total interest over the full term.

How Much Should Rates Drop?

An old rule of thumb says refinancing is worthwhile when you can cut your rate by about 1 percentage point, but the right threshold depends on your balance, costs and how long you will stay. On a large loan, even a half-point drop can pay off. Use the break-even method rather than the rule of thumb.

Pros of Refinancing

  • Lower monthly payments.
  • Interest savings over time.
  • Predictability by converting an ARM to a fixed rate. See fixed vs. adjustable mortgages.
  • Faster payoff with a shorter term.
  • Equity access for major needs.

Cons and Risks

  • Closing costs can eat the savings if you move soon.
  • Resetting the loan term can mean more total interest.
  • Cash-out risk increases the debt secured by your home.
  • Qualification requirements include credit, income and appraisal.
  • Temptation to spend equity on short-term wants.

When You Might Not Qualify

You may struggle to refinance if your credit score has dropped, your income is lower, your debt-to-income ratio is high or your home’s value has fallen so that you have little equity. Improving your credit before applying can help, as explained in our guide to improving your credit score.

Refinance vs. Home Equity Loan or HELOC

If you want cash but like your current low rate, a second loan may be better than a cash-out refinance, since it leaves your first mortgage untouched. Read our comparison of home equity loans and HELOCs to see the differences.

Steps to Refinance

  • Define your goal. Lower payment, shorter term or cash.
  • Check your credit and equity. Most lenders prefer at least 20 percent equity for the best pricing.
  • Shop several lenders and request Loan Estimates the same day to compare fairly.
  • Calculate the break-even point and total interest.
  • Lock your rate when you are comfortable.
  • Submit documents, such as pay stubs, tax returns and bank statements.
  • Complete the appraisal and underwriting.
  • Close, after reviewing the Closing Disclosure. You usually have a three-day right of rescission on a primary-home refinance.

The Consumer Financial Protection Bureau provides refinance guidance at consumerfinance.gov.

Tips to Save Money

  • Negotiate fees, and compare lender credits against a higher rate.
  • Avoid rolling costs into the loan if you plan to move soon.
  • Do not skip comparing your current lender with others.
  • Consider no-closing-cost options carefully, since the cost is built into the rate.
  • Keep paying your old mortgage until the refinance closes.

Questions to Ask Your Lender Before You Commit

A refinance quote only tells part of the story, so ask a few direct questions before you sign. What is the annual percentage rate, and how does it compare with the note rate? Which fees are lender charges and which are third-party charges such as appraisal and title work? Are discount points included, and how many months of savings does each point buy back? Is there a prepayment penalty on the new loan? How long will the rate lock last, and what happens if closing is delayed? Getting these answers in writing makes it much easier to compare offers fairly.

A Quick Note on Timing

Mortgage rates move with the broader economy, and nobody can predict them reliably. Instead of trying to time the market, set a target based on your break-even math. For example, decide that you will refinance if a quote cuts your payment by a set dollar amount and your break-even is under three years. Revisit the numbers once or twice a year, and keep your credit, income documents and home equity in good shape so you can move quickly when the numbers line up.

Frequently Asked Questions

How often can I refinance?

There is no legal limit, though lenders may have seasoning requirements, and each refinance adds closing costs.

Will refinancing hurt my credit?

A hard inquiry and a new account can cause a small temporary dip, but timely payments help over time.

Can I refinance with PMI?

Yes. You can refinance into a new loan that may remove PMI if your equity is high enough.

Is a cash-out refinance a good idea?

It can be if the cash funds something with real value and you can afford the higher balance, but it adds risk.

Bottom Line

Refinancing makes sense when you can lower your costs enough to recover closing costs before you move. Compare lenders, calculate the break-even point and be wary of extending your term or borrowing more than you need.

Related guides

This article is for general education only and is not financial, tax, legal or insurance advice. Rates, limits and rules change, so confirm current details with the provider or a licensed professional before you decide.