10 Mortgage Deal Killers (And How to Avoid Them)

Word mortgage spelled out with letter tiles, representing key factors that can impact mortgage approval and financing

An accepted offer does not guarantee that your mortgage funds will be available on completion day.

Mortgage pre-approvals and commitments are based on the information available when the lender reviews the application. The lender may still need to confirm the property, income, employment, down payment, credit, and other conditions before releasing the money.

Changes that seem unrelated to the purchase can affect the amount you qualify for or delay the lender’s final review. Until the sale completes, keep your finances stable and speak with your mortgage professional before making a significant change.

Key Takeaways

  • A mortgage pre-approval is not a guarantee of final funding.
  • Employment, debt, credit, and available cash can be reviewed again.
  • New loans or large purchases may reduce the amount you qualify for.
  • Deposits and transfers should have a clear, documented source.
  • Tell your mortgage professional immediately if your finances change.

1. Don’t Change Jobs or Quit Your Job

Lenders want to see reliable income. Quitting, changing employers, reducing your hours, becoming self-employed, or moving from a permanent position into probation can affect how your income is evaluated.

A new job with a higher salary may still create complications if the lender requires a history of earnings, a completed probationary period, or updated employment documents. Commission, bonus, overtime, and self-employment income can require additional verification.

If a job change cannot wait, contact your mortgage professional before accepting the new position. They can explain what documents the lender may need and whether the change is likely to affect approval.

Do not hide an employment change. The lender may verify your employment again before funding the mortgage.

2. Don’t Buy a Vehicle (Unless You Want to Live In It!)

A new vehicle loan or lease creates a monthly obligation that can affect your debt-service ratios. This may reduce the amount you qualify to borrow, even if the vehicle payment feels affordable within your personal budget.

The timing matters. A buyer who qualified close to the lender’s maximum may no longer qualify after adding a large monthly payment.

Wait until after the home purchase completes before financing or leasing a vehicle whenever possible. If replacing a vehicle is unavoidable, ask your mortgage professional to calculate the effect before signing anything.

The same concern can apply to recreational vehicles, boats, motorcycles, and financed equipment.

Toy family riding on a car game piece illustrating why buying a vehicle before closing can jeopardize your mortgage approval.

3. Don’t Miss Any Payments

Payment history is an important part of your credit profile. A missed credit-card, loan, line-of-credit, or cellphone payment could lower your credit score or create questions during the lender’s final review.

Set reminders or automatic payments for every account while buying a home. Continue paying at least the required minimum, even if you are trying to preserve cash for closing.

Check your credit report early enough to correct errors before making an offer. A legitimate missed payment cannot always be removed, but identifying the issue in advance gives your mortgage professional time to consider the available options.

4. Don’t Drain Your Savings

The lender may expect you to have enough money for the down payment and closing costs. A sudden drop in your account balance could create a shortfall or require an explanation.

In addition to the down payment, buyers may need funds for:
  • Property Transfer Tax
  • Legal or notary fees
  • Inspection and appraisal costs
  • Property-tax and utility adjustments
  • Insurance
  • Moving expenses
  • Immediate repairs or purchases
Avoid moving or spending money identified for the purchase without checking first. Keep a financial cushion after closing so an unexpected expense does not immediately create a problem.

If you are using money from an FHSA, RRSP, gift, investment account, or the sale of another property, confirm the required timing and documentation well in advance.

5. Don’t Hide Any Debts

Mortgage applications require accurate information about debts and financial obligations. This can include credit cards, student loans, vehicle loans, lines of credit, support payments, other mortgages, and debts you have co-signed.

A lender may discover an undisclosed debt through the credit report, bank statements, or other documentation. This can delay the application, reduce the approved amount, or cause the lender to withdraw its commitment.

Deliberately providing false or incomplete information can also amount to mortgage fraud.

Tell your mortgage professional about every financial obligation at the beginning. It is easier to find a solution before an offer is accepted than while approaching the completion date.

6. Don’t Make Large Purchases Before Closing

Furniture, appliances, electronics, renovations, and travel can be tempting once you know where you are moving. Large purchases can reduce the cash available for closing or increase credit-card balances.

Even a cash purchase may create a problem if it uses money the lender expected to remain available for the down payment and closing expenses.

Wait until the purchase has completed before buying expensive items for the new home. The furniture sale will probably still be there after you receive the keys.

If an urgent purchase cannot wait, confirm that it will not affect your financing.

Sorry! board game symbolizing the disappointment of having a mortgage application declined because of avoidable financing mistakes.

7. Don’t Apply for New Credit

Applying for a credit card, personal loan, line of credit, or store-financing plan may result in a new credit inquiry. If approved, the new account or balance can change your credit profile and debt obligations.

Promotional offers such as “no payments for 12 months” still involve credit. The lender may need to include the obligation when evaluating your application.

Avoid new credit applications between pre-approval and completion unless your mortgage professional confirms they are safe.
This also applies to increasing existing credit limits or accepting a new line of credit offered by your bank.

8. Don’t Make Large Deposits Without Talking to Your Lender

A large deposit is not automatically a problem. The lender may need proof showing where the money came from and whether it must be repaid.

Common sources include:
  • A gift from an immediate family member
  • Sale of a vehicle or other asset
  • Transfer from an investment account
  • Employment bonus
  • Inheritance
  • Proceeds from selling another property
Keep statements, receipts, sale agreements, gift letters, and transfer records. Avoid depositing large amounts of cash because the source can be difficult to verify.

Speak with your mortgage professional before moving down-payment funds between accounts. They can tell you what paper trail the lender will require.

9. Don’t Change Bank Accounts

Opening or closing a bank account does not automatically cancel a mortgage approval. It can create additional work when the lender is reviewing statements and tracing the down payment.

Moving money between several accounts can make the transaction harder to document. Closing an account too early may also make it difficult to retrieve the required statements later.

Keep the accounts connected to your mortgage application open until your mortgage professional confirms they are no longer needed. Save complete statements showing transfers between accounts.

If you need to change banks, let the lender know and keep a clear record of where every dollar went.

10. Don’t Co-Sign a Loan for Someone Else

Co-signing makes you legally responsible for another person’s debt. A lender may include that obligation when calculating how much you can borrow, even if the other borrower makes the payments.

This can apply to vehicle loans, student lines of credit, personal loans, rental agreements, and other mortgages.

Some lenders may consider evidence that the other borrower has consistently made the payments from their own account. The treatment varies by lender and situation, so do not assume the debt will be excluded.

Wait until after your home purchase completes before co-signing whenever possible. If you already co-signed, disclose it at the beginning of the mortgage application.

Hands exchanging Monopoly money representing cosigning for someone else while applying for a mortgage and how it can affect mortgage approval

What to Do if Your Financial Situation Changes

Contact your mortgage broker or lender immediately if you change jobs, take on debt, receive a large sum of money, or experience another financial change.

Early disclosure gives the lender time to request documents, recalculate the application, or consider another mortgage product. Waiting until the final days before completion can leave fewer options.

Do not assume that an accepted offer, pre-approval, or signed mortgage commitment means the money is guaranteed. Review all outstanding lender conditions and confirm when they must be satisfied.

Your Realtor, mortgage professional, and lawyer or notary each handle different parts of the purchase. Keep everyone informed when a change could affect your ability to complete.

Final Thoughts

The period between an accepted offer and completion is a good time to keep your finances boring. Continue paying bills, avoid new debt, and keep the money required for closing accessible.

Most financing problems are easier to address when they are identified early. A quick conversation before making a major financial decision can prevent delays or the loss of mortgage approval.

If you are planning to buy in Pitt Meadows, Maple Ridge, the Tri-Cities, or elsewhere in Greater Vancouver, I can help you coordinate the real estate side of the purchase and connect you with a qualified mortgage professional.

Related Reading

Frequently Asked Questions

Can a lender withdraw a mortgage approval before closing?

Yes. A lender may withdraw or change an approval if the borrower’s finances change, the property is not acceptable, required documents are missing, or the conditions in the mortgage commitment are not satisfied.

Does changing jobs automatically cancel a mortgage approval?

No. The effect depends on the type of employment, income, probationary period, and lender requirements. Tell your mortgage professional before making the change so they can confirm how it will be treated.

Will buying a car affect my mortgage?

It can. A vehicle loan or lease adds a monthly debt payment and may reduce the mortgage amount you qualify for. Check with your mortgage professional before financing or leasing a vehicle.

Why does the lender need to know where my down payment came from?

Lenders need to verify that the down payment is legitimate, available, and not an undisclosed loan. They may request bank statements, gift letters, investment records, or documents showing the sale of an asset.

Can I use my credit card before my home purchase closes?

Yes, but avoid increasing the balance significantly or missing a payment. Large balances can affect your debt ratios, credit score, and available cash.

Should I buy furniture before completion?

It is safer to wait until after completion, especially if the purchase would use credit or money needed for closing. Even deferred-payment promotions can create a new credit obligation.

What should I do if something changes after mortgage approval?

Tell your mortgage professional immediately. Do not wait for the lender to discover it during a final review. Early disclosure provides more time to supply documents or find another solution.

Is a mortgage pre-approval a guarantee?

No. A pre-approval is based on the borrower’s financial information at the time of application. Final approval also depends on the property, supporting documents, and continued compliance with the lender’s conditions.

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