Even financially responsible buyers can stumble during the mortgage application process simply by not knowing which everyday financial moves can raise red flags with underwriters. Avoiding a handful of common mistakes can keep your approval on track and prevent unnecessary delays.
Making Large Purchases Before Closing
Buying new furniture, a car, or even financing a large appliance after you have applied, but before closing, is one of the most common application mistakes. These purchases can raise your DTI ratio or trigger a new credit inquiry, both of which lenders re-check before final approval.
Why Lenders Re-Verify Before Closing
Many lenders pull a final credit report just days before closing specifically to catch this kind of activity. A sudden change in your financial profile can delay or even derail your closing date entirely.
Switching Jobs During the Process
Changing employers, even for a better salary, can complicate your application if the lender cannot easily verify a stable income history with the new employer. This is especially true for switches into a different industry or from salaried to commission-based work.
Failing to Explain Unusual Bank Activity
Large, unexplained deposits or transfers between accounts often trigger requests for additional documentation. Applicants who do not anticipate this and provide clear explanations upfront can face significant delays waiting for underwriting to clear the discrepancy.
Moving Money Between Accounts
Even legitimate transfers, like consolidating savings from multiple accounts, can look unusual to an underwriter without context. Keeping a simple paper trail of where funds came from saves time later.
Co-Signing for Someone Else’s Loan
Co-signing a loan for a family member, even if you are not the one making payments, adds that debt to your own DTI calculation. Many applicants overlook this until it unexpectedly affects how much they can borrow for their own mortgage.
Not Disclosing All Sources of Income or Debt
Leaving out a side income or a small debt because it seems insignificant can backfire if it surfaces later during verification. Full transparency from the start, even for outstanding small obligations, helps underwriting move more smoothly. If you are unsure how non-traditional income should be documented, our companion piece on Proving Income for Self-Employed Applicants covers this in more depth.
Q&A
1. Can I buy furniture for my new home before closing? It is best to wait until after closing, since large purchases can affect your DTI ratio and delay final approval.
2. Will changing jobs always hurt my application? Not always, but a job change involving a different industry or pay structure may require additional documentation to verify stable income.
3. What if I already have an unexplained deposit on my statements? Provide a written explanation along with supporting documentation as early as possible to avoid delays.
4. Does co-signing a loan really affect my mortgage approval? Yes, co-signed debt is typically included in your DTI calculation even if you are not the one making the payments.
5. Is it better to disclose minor debts even if they seem unimportant? Yes, full disclosure helps avoid surprises during verification that could delay or jeopardize your approval.
Final Thoughts
Most application mistakes come from financial decisions made out of habit rather than any intent to cause problems. Staying mindful of your financial activity throughout the process is one of the simplest ways to keep things on track. Browse the rest of our Mortgage Application hub for more guidance on what underwriters look for at each stage.