Why Closing Old Credit Cards Can Hurt Your Mortgage Application

Explaining why closing old credit cards can hurt your application

Closing old credit cards before a mortgage application in Simcoe County seems like a responsible move—cleaning up your finances to look “debt-free”—but it is actually one of the most common mistakes we see homebuyers make.

Key Takeaways

  • History is King: 15% of your score is based on the length of your credit history. Closing old cards shortens this history.

  • Utilization Spikes: Closing a card removes its credit limit, which automatically increases your utilization ratio on remaining cards.

  • Mix Matters: Lenders want to see a variety of credit types (loans vs. cards). Removing one can unbalance your profile.

  • The “Sock Drawer” Strategy: It is often better to keep a card open with a $0 balance than to close it entirely.

The “Spring Cleaning” Mistake

We see it often at TMC Greater Simcoe. A client in Barrie is preparing to upgrade their home. In an effort to look financially tidy for the bank, they call Visa and Mastercard to cancel three old cards they haven’t used in years.

They think they are being responsible. The credit bureau thinks they just became a higher risk.

When you close a credit account, two things happen immediately:

  1. You Erase History: You lose the “age” of that account from your average.

  2. You Shrink Your Safety Net: You lose the available credit limit associated with that card.

Factor #1: The “Average Age of Accounts” (15% of Score)

Credit bureaus love consistency. They want to see that you have managed credit for a long time. They calculate your “Average Age of Accounts” (AAoA).

How it works:

  • Card A: Open for 10 years.

  • Card B: Open for 2 years.

  • Average Age: (10 + 2) ÷ 2 = 6 Years.

If you close Card A because you “don’t use it anymore,” your average age instantly drops to 2 years. This can significantly lower your score right before you apply for a high-ratio mortgage.

Pro Tip: Your oldest card is your financial “anchor.” Protect it at all costs. Even if it has a low limit and no rewards, that 10-year history is gold for your mortgage approval.

Factor #2: The “Credit Mix” (10% of Score)

Lenders like to see that you can handle different types of debt. This is called your “Credit Mix.”

  • Revolving Credit: Credit cards, Lines of Credit (payments vary).

  • Installment Credit: Car loans, Student loans, Mortgages (fixed payments).

If you pay off a car loan and close three credit cards all in the same month, your “mix” becomes very thin. This is especially risky for first-time buyers who may have “thin files” to begin with.

The Decision Matrix: Keep it or Close it?

Not every card needs to be saved. Use this table to decide what to do with your plastic.

ScenarioRecommendationWhy?
It’s your oldest cardKEEP OPENThis is the anchor of your credit history.
It has a high annual feeDOWNGRADECall the bank and switch it to a “no-fee” version of the same card to keep the history alive without the cost.
It’s a store card (e.g., The Bay)CLOSE (Caution)Store cards are viewed as “junk credit” by some lenders. If it’s new, close it. If it’s 10 years old, keep it.
You can’t resist spendingCLOSEIf having the card tempts you to overspend, the risk of debt outweighs the benefit of credit age.
Joint account with ex-partnerCLOSEProtect yourself from liability. A slightly lower score is better than being responsible for someone else’s debt.

The “Netflix Strategy” for Old Cards

If you decide to keep an old card open, you can’t just throw it in a drawer and forget it. If a card is inactive for 12+ months, the bank might close it automatically for dormancy.

The Solution:

  1. Set up one small automatic payment on the card (e.g., your $15 Netflix or Spotify subscription).

  2. Set up Auto-Pay from your chequing account to pay that card in full every month.

  3. Cut up the physical card or lock it away.

This keeps the account “active” and building positive payment history every single month without you lifting a finger.

When Cleaning Up Makes Sense

There are times when closing accounts is necessary. If you are refinancing your mortgage to consolidate debt, the lender might require you to close the credit cards you are paying off.

This is a condition of the loan to ensure you don’t run the balances back up. In this specific case, closing the cards is worth it because the benefit of eliminating high-interest debt outweighs the dip in your credit score.

FAQs on Closing Credit Accounts

Will paying off a collection account remove it from my report? Not immediately. The “paid” status looks better than “unpaid,” but the record of the collection remains for up to 6 years. However, paying it off is often a condition for mortgage approval.

I have too many cards (10+). Should I close some? Yes, having too much available credit can sometimes spook lenders (they worry you could go into massive debt tomorrow). Close the newest ones with the lowest limits first. Leave the oldest ones alone.

Does closing a chequing account affect my credit? No. Bank accounts (savings/chequing) are not credit accounts and do not report to the bureaus.

I’m moving from the GTA to Simcoe. Should I change my address on my cards first? Yes. Keep your address current. Mismatched addresses on credit reports can cause delays during the lender’s verification process.

Strategic Advice for Your Situation

Credit scores are complex ecosystems. What works for your neighbour in Orillia might not work for you.

Before you go on a cancellation spree, talk to Craig Brunsdon or one of our team members. We can simulate how closing a specific account might impact your mortgage eligibility.

Don’t guess with your biggest asset. Contact us today for a free credit strategy session, or explore our mortgage resources to see what you can afford.

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