Five Ways to Messing Up Mortgage Refinancing

Quick Answer

Refinancing your mortgage can save money, but common mistakes include poor credit, skipping lender comparisons, ignoring closing costs (up to 3% of loan balance), job changes, and new debt. A FICO Score below 620 often blocks approval. Always check your credit report and avoid major financial moves during the process.

Updated July 2026

Five Ways to Mess Up Mortgage Refinancing

Refinancing isn’t just a rate chase. It’s a financial decision that follows you for years. Back in early 2014, the average 30-year fixed rate sat around 4.5%, according to the Federal Reserve’s H.15 report, and plenty of homeowners still fumbled the process even with rates that low. The whole point is to cut your payment or shave years off the loan. Skip the prep work, though, and you can end up denied, stuck with higher costs, or in worse shape than before you started.

Your credit standing is where all of this starts. Lenders lean on the FICO Score to decide who gets approved, and a number below 620 will shut the door on most conventional refinances. The Consumer Financial Protection Bureau puts it plainly: “credit history is among the top reasons refinancing is denied.”

1. Ignoring Your Credit Report Before Refinancing

A lot of homeowners figure their credit must be fine since they’ve never missed a payment. That’s not a safe bet. Credit reports carry errors all the time, old collections that should’ve dropped off, late payments that were never actually late, accounts that belong to someone else entirely.

Pull your report before you apply for anything. You can get one from Experian, TransUnion, or Equifax. Under the Fair Credit Reporting Act, you’re entitled to a free copy each year through AnnualCreditReport.com. Found something wrong? Dispute it with both the bureau and whoever reported it, right away.

One missed payment in the past year can do more damage than people expect. Lenders also weigh your debt-to-income ratio (DTI), monthly debt against gross income. Cross 43% and most conventional lenders won’t touch your application, no matter how clean your payment history looks otherwise. The Federal Reserve’s 2013 consumer credit report found that refinance applicants above a 40% DTI got rejected at almost double the rate of those under it.

Run the numbers on a real example. A $200,000 loan at 4.5% costs $1,013 a month. Drop to 4.0% but pay $6,000 in closing costs, and you’re not breaking even until month 120, a full decade. Sell or move before then and the refinance actually cost you money. That’s the part people forget: refinancing isn’t automatically a win just because the rate went down.

This math doesn’t work for everyone, and that’s worth saying plainly. Anyone planning to sell within two years should probably skip refinancing altogether, especially when closing costs outpace the projected savings. Short-term owners rarely come out ahead here, and no amount of rate-shopping changes that.

2. Sticking With Your Current Lender Without Comparison

Going back to your current lender feels easier. They already have your file, your history, your paperwork. Some, like Chase or Bank of America, will even waive fees to keep you as a customer. Easier isn’t the same as cheaper, though.

The Consumer Financial Protection Bureau (CFPB) found that borrowers who shop at least three lenders save around 0.5 percentage points on average. Doesn’t sound like much until you run it against a $200,000 loan: nearly $100 off the monthly payment, more than $36,000 saved in interest over 30 years.

Check rates through Fannie Mae‘s mortgage rate tool or NML before committing to anyone. SoFi and LendingTree are worth a look too, particularly if your credit is strong enough to qualify for their better tiers.

Lender	Rate Range (2014)	Fee Waivers	APR (Avg.)
Chase	4.25%–4.75%	Yes (for existing customers)	4.4%
SoFi	4.0%–4.6%	Partial (varies)	4.25%
Bank of America	4.3%–4.8%	Yes (limited)	4.5%
LendingTree	3.9%–4.9%	No	4.3%
Fannie Mae Marketplace	4.1%–4.6%	Yes	4.35%

Small rate gaps compound fast. Drop your rate by just 0.5% on a $200,000 loan and your payment falls from $1,013 to $966, roughly $47 a month back in your pocket. Over five years, that’s $2,820 in interest you never paid. But if closing costs run $5,000, you’re not seeing real savings until year 11. Not everyone benefits the same way, and that’s the piece lender ads never mention.

Here’s where this whole strategy runs into a wall: shopping around does nothing for you if your credit can’t clear the bar. A FICO Score under 620 means even the cheapest rate on the table is off-limits. For borrowers without a clear path to raise their score first, this advice simply doesn’t apply yet.

3. Underestimating Closing Costs

Nothing about refinancing is free, even when the goal is saving money long-term. Expect to pay somewhere between 2% and 3% of the loan balance upfront. On a $200,000 loan, that’s $4,000 to $6,000 out of pocket before you save a dime.

Here’s where that money actually goes:

Application fee: $400–$800 (varies by lender)
Credit report fee: $30–$50
Home appraisal: $300–$600
Underwriting and processing: $1,000–$1,500
Document prep: $200–$400
Recording fees: $100–$300

The FDIC has flagged this repeatedly, warning that “many borrowers underestimate closing costs, leading to cash flow strain or loan denial.” Some lenders pitch “no-cost” refinancing, but read the fine print. They’re usually just rolling those fees into your principal, which means you pay interest on your own closing costs for the life of the loan.

Take that same $200,000 loan, tack on a 3% fee, and your balance climbs to $206,000. Refinance into a new 30-year term at 4.5%, and your monthly payment actually rises, from $1,013 to $1,045, even though your rate dropped. That’s the cash flow trap, and it quietly defeats the entire reason most people refinance in the first place.

This is exactly where the advice falls apart for tighter budgets. If your monthly payment already has no slack in it, a $30 increase isn’t trivial, it’s the difference between comfortable and stretched thin. The standard refinancing playbook assumes you can absorb a bump in payments, and plenty of households simply can’t.

4. Changing Jobs or Quitting During the Process

Switching jobs or quitting mid-refinance ranks among the most avoidable mistakes homeowners make. Lenders need to verify stable income, full stop. Fannie Mae‘s underwriting guide is direct about it: “a change in employment status during the loan process may trigger additional documentation or delay approval.”

Quit your job mid-process and the lender sees risk, even if you’ve never missed a mortgage payment in your life. Your debt-to-income ratio (DTI) becomes the problem. Lose your income source and that ratio spikes overnight, sometimes enough to disqualify you outright.

New jobs create their own headaches. Lenders typically want a recent pay stub or an employer letter confirming your role and pay. Started your new position last week and only have one paycheck to show? Expect the lender to hold off closing until you’ve got two. That alone can push your timeline back weeks, sometimes longer.

Even a raise doesn’t always help if the new role looks riskier on paper, a different industry, a relocation, anything that reads as instability. The CFPB‘s advice is blunt: “Never change jobs during the mortgage process unless absolutely necessary.”

5. Taking on New Debt Before Closing

Opening a new credit card or financing a car mid-refinance can sink the whole deal. New debt pushes up your debt-to-income ratio (DTI), and the credit inquiry alone can ding your FICO Score before you’ve even been approved for anything.

You don’t even need to open the account. Just applying triggers a hard pull. Experian notes that “a single hard inquiry can reduce your FICO Score by 5–10 points, and multiple inquiries can cause a drop of up to 30 points.”

Lenders pull your credit again right before closing, not just at application. Show up with a new loan or card on your file and they can deny the refinance on the spot, regardless of your payment history. Fannie Mae‘s underwriting guidelines are clear that “any new debt obligation must be disclosed and evaluated.”

Hold off on the new car, the furniture, the vacation, anything that requires financing, until after you’ve signed. If you absolutely must buy something big, wait until the ink is dry on the final paperwork.

Key Takeaways

A FICO Score below 620 often disqualifies refinancing applicants, according to Experian.
Closing costs average 2% to 3% of the loan balance, per FDIC guidelines.
Comparing at least three lenders can save an average of 0.5 percentage points on your rate, per CFPB.
Changing jobs during refinancing may delay closing by weeks or months, as noted by Fannie Mae.
New credit applications can reduce your FICO Score by up to 30 points, according to Experian.
Refinancing applicants with a DTI above 43% are rejected at a higher rate, per Federal Reserve 2013 data.

Frequently Asked Questions

Can I refinance if I have a judgment on my credit report?

Most lenders will not approve a refinance with an active judgment. Judgments can indicate financial distress and may disqualify you. Pay off or resolve the judgment before applying.

How long does a mortgage refinance take?

Typically 30 to 45 days. Delays are common if documentation is missing or if you change jobs or take on new debt.

Does refinancing hurt my credit score?

Yes, temporarily. A hard credit pull can lower your score by 5–10 points. However, the long-term benefit of a lower rate usually outweighs the short-term dip.

Can I refinance with a low credit score?

It’s possible, but difficult. Conventional loans require a minimum of 620. FHA loans accept scores as low as 580, but with higher fees and stricter underwriting.

Should I use my home equity to pay off debt?

Only if you can afford the monthly payment. Refinancing to consolidate debt can reduce interest, but it extends the repayment period and puts your home at risk if you default.

What happens if my credit score drops before closing?

Lenders may recheck your credit. A significant drop could result in denial or a higher interest rate. Avoid new debt and credit applications.

Can I refinance if I’m self-employed?

Yes, but documentation is stricter. Lenders require two years of tax returns and proof of consistent income. Self-employed applicants often face higher DTI limits and more scrutiny.

Is it worth refinancing if I only save $50 a month?

It depends. If closing costs are $4,000, you’d need to save $50 for 80 months to break even. Refinancing makes sense only if you plan to stay in the home longer.

Can I refinance with a 20% down payment?

Yes. A 20% down payment may help you avoid private mortgage insurance (PMI), but it doesn’t guarantee approval. Lenders still assess credit, income, and DTI.

What is a cash-out refinance?

It’s a type of refinance where you borrow more than you owe and take the difference in cash. This can fund home improvements or debt consolidation, but increases your loan balance and risk.