What Hurts Your Credit Score in Canada: Ranked by Impact (2026)

Credit scores in Canada use a 300–900 scale, and the factors that damage them are not equally weighted. A single missed payment and a maxed-out credit card both hurt your score — but they hurt it very differently, recover at very different rates, and stay on your file for different lengths of time. Knowing which actions cause the most damage, and how lasting that damage is, lets you prioritise your recovery or make smarter decisions before problems occur. This article is part of the Canadian credit scores hub.

Payment history is the heaviest single factor at approximately 35% of your score. Credit utilization — how much of your available credit you are using — is second at roughly 30%. The remaining 35% covers account age, credit mix, and new credit activity. That weighting means the most damaging events are nearly always related to either missing payments or carrying extreme balances, while less-feared actions like closing a single card or one credit application typically cause minor, temporary damage.

This guide ranks every major score-damaging event from highest to lowest impact, explains how long each negative mark remains on your Equifax and TransUnion reports, and describes what recovery looks like.

What Hurts Your Credit Score: Ranked by Severity

The distinction between items 1–4 (permanent negative history) and items 5–10 (recoverable or minor) is significant. The first group leaves a mark on your file for years regardless of what you do next. The second group is either temporary or can be reversed within months through straightforward action.

1. Missed Payments — The Largest Damage

Missing a payment by 30 or more days is the most damaging single event in credit scoring. Payment history accounts for approximately 35% of your score — the heaviest factor by a wide margin. Lenders view missed payments as the clearest signal that a borrower may not repay future obligations, which is why the scoring models weight them so heavily.

The first reporting threshold is 30 days. Payments that are 1–29 days late are not reported to the credit bureaus and have zero impact on your score. Once 30 days pass without payment, the lender reports the delinquency and the score damage occurs immediately.

R1 is the highest rating (paid on time). R9 is the worst (written off as bad debt). Most mainstream lenders require R1 history on all existing accounts before approving new credit.

Recovery from a missed payment is slow but predictable. The first 12 months after the delinquency are the most damaging; obtaining new credit in that window is very difficult. From 12 to 24 months, consistent on-time payments elsewhere begin rebuilding your file and your score starts recovering. By 24–36 months, many credit products become accessible again. Between 36–48 months, the impact is substantially reduced, and at 6–7 years the entry drops from your report entirely.

2. Collection Accounts

A collection account is created when a lender writes off your debt as uncollectable and sells or transfers it to a collection agency. The collection agency then creates a new tradeline on your credit file, separate from the original lender’s entry. This means a single unpaid debt can produce two negative items — the original lender’s charge-off and the collection agency’s tradeline.

The critical point most people do not know: paying a collection account does not remove it from your file. It becomes “paid collection,” which is marginally better than “unpaid collection” for mortgage and car loan underwriters — but it remains on your credit report for the full 6–7 year retention period either way. If you want a collection account removed, you need to negotiate a deletion letter with the collection agency before paying. See the credit report dispute guide for how to approach this process. Many collection agencies will agree to delete the tradeline upon receiving payment if you ask directly; this is worth negotiating for every time.

Collection accounts suppress mortgage approvals more than almost any other item. Many A-lender underwriters reject applications with any outstanding collection automatically, regardless of the credit score. Resolving collections — ideally with deletion — should be the first step for anyone planning to apply for a mortgage.

3. Bankruptcy

A personal bankruptcy in Canada is the most severe credit event in the scoring system. The score drop is immediate and substantial — typically 130–200 points — and the record remains on your file for 6–7 years from the date of discharge (not the filing date). A second bankruptcy stays on file for 14 years from discharge.

During bankruptcy and throughout the post-discharge retention period, most mainstream lenders will not advance new credit. Rebuilding begins after discharge, typically starting with secured credit cards, credit-builder loans, and becoming an authorized user on a family member’s account. With deliberate effort, many people reach scores of 650–700 within 2–3 years of discharge, which is enough to qualify for basic mortgage products through some B lenders.

4. Consumer Proposal

A consumer proposal is a formal legal agreement, administered by a Licensed Insolvency Trustee, that allows you to repay a negotiated portion of your debts without declaring full bankruptcy. It is less severe than bankruptcy in its credit impact — but it is still a significant negative mark.

A consumer proposal appears on your credit file for 3 years after the proposal is fully completed and discharged, or 6 years from the date it was filed — whichever comes first. If your proposal takes 4 years to complete, the 6-year-from-filing clock is likely to expire first, meaning the record disappears within 2 years of completion. If you complete it in 2 years, the 3-year post-discharge rule applies.

Many borrowers successfully rebuild to scores of 700+ within 2–3 years after completing a consumer proposal, particularly if they obtain secured credit products immediately after filing and maintain perfect payment history throughout.

5. High Credit Utilization — Ongoing Suppression

High credit utilization is different from every other item on this list in one important way: it has no permanent history. A missed payment from three years ago is still on your report. A 90% utilization rate from three years ago is not — only your current utilization matters. This makes utilization both the easiest problem to fix and, for some borrowers, the most unnecessarily persistent one.

Carrying balances above 50% of your credit limit suppresses your score meaningfully each month the balance remains. Above 75%, the impact is severe. A borrower with a $10,000 total credit limit carrying an $8,500 balance (85% utilization) but perfect payment history often has a score in the 580–640 range — meaningfully below where their payment record alone would place them.

The fix is straightforward: pay down the balances. Scoring models recalculate utilization every billing cycle. A borrower who reduces utilization from 85% to 15% can expect to see 40–80 points of score recovery within two statement cycles. This makes utilization reduction the fastest score-improvement strategy available.

6. Closing Credit Cards

Closing a credit card hurts your score through two separate mechanisms, and the damage is permanent rather than temporary.

Reduced available credit: When you close a card, your total credit limit decreases. If you carry any balance across your other cards, your utilization ratio rises immediately. On a $20,000 total limit carrying $4,000 in balances (20% utilization), closing a $5,000-limit card raises your utilization to $4,000/$15,000, or 27% — without spending a dollar more.

Reduced average account age: Credit scoring models reward long-established accounts. The average age of all your open accounts is factored into your score. Closing your oldest card reduces this average meaningfully; closing a recently opened card has minimal effect on the average.

The practical rule: never close your oldest credit card. If it carries an annual fee you do not want to pay, call the issuer and ask for a product downgrade to a no-fee version with the same lender. Downgrading keeps the account open and the account age intact.

7. Multiple Hard Inquiries

Every time you apply for credit — a credit card, a car loan, a mortgage, a line of credit — the lender pulls your credit report, creating a hard inquiry. Each hard inquiry reduces your score slightly, typically 5–10 points, and remains on your report for 3 years (though the score impact fades significantly after 12 months).

The damage is not from a single inquiry — it is from a pattern of multiple applications over a short period, which signals financial stress to the scoring models.

The important exception: multiple mortgage or auto loan inquiries within a 14–45 day window are grouped and counted as a single inquiry. This rate-shopping protection is built into the credit scoring models and allows you to compare rates across multiple lenders without penalty — as long as all applications happen within that concentrated window.

8. Having No Credit Activity

A thin credit file — no accounts, or all accounts inactive — does not produce a bad score. It produces no score at all. In practice, this is nearly as limiting as a poor score: lenders cannot assess your creditworthiness, most mainstream products require an established credit history, and some landlords and employers check credit as part of their screening process.

New Canadians and young adults often face this problem. The standard solution is to open a secured credit card (where a cash deposit becomes your credit limit), use it for small recurring purchases, and pay the balance in full each month. After 6–12 months of on-time payments, a meaningful credit score is typically established.

How Long Each Negative Stays on Your Credit Report

Retention periods vary slightly by province. Quebec has shorter retention periods for some items under the Act Respecting the Protection of Personal Information in the Private Sector.

The One Thing That Always Helps

Regardless of what has happened in your credit history, the single most consistent score-improver is straightforward: pay every account on time, every month, from this point forward. Every on-time payment adds positive history. Every month without a new negative event lets the old ones fade. Credit scores are designed to reflect current creditworthiness — they reward consistent improvement over time, and no negative item is permanent.

Related Reading

• Hard vs. Soft Credit Inquiry in Canada
• Does Closing a Credit Card Hurt Your Credit Score in Canada?
• Authorized User on a Credit Card in Canada
• How to Rebuild Credit After Bankruptcy
• Equifax vs. TransUnion Canada