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How Credit Card Issuers Determine Your Credit Limit in Canada

How Credit Card Issuers Determine Your Credit Limit in Canada
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Credit card companies will set your credit limit through a complicated process known as underwriting, which uses mathematical formulae, extensive testing, and analysis to determine your credit limit. The details of this procedure are kept confidential because it is how the company makes money.

This computation system assists the company in deciding who to approve, at what rate, and within what limits. The larger the credit limit, the more the company’s confidence in borrowers’ ability to repay their loan. Read further to learn the basic principles used by issuers to establish your credit limit.

What is a Credit Limit?

A credit card’s credit limit is the maximum amount of credit that a card issuer will provide to its cardholders. Once an application has been granted, a credit limit, also known as a credit line, is established and can be increased over time by responsible card usage.

Customers can also request credit line extensions over time to accommodate their changing demands.

Cards With Preset Credit Limits

Most credit cards come with a pre-determined credit limit. This implies that once the issuer has assessed your creditworthiness, they will establish a dollar limit on the number of outstanding balances you can have on your account, including new purchases and/or transferred balances.

If your credit score merit it and the credit card provider is prepared to extend additional credit, this fixed limit can be increased over time or at the customer’s request.

Cards with No-Preset Credit Limits

Some charge cards and premium credit cards have dynamic credit limits, which means they can grow or reduce depending on your actual spending habits and behavior.

However, if a significant purchase is expected, a dynamic credit line may accommodate out-of-the-ordinary spending as these forms of credit limits are flexible.

Annual fee
$799
Our valuation
$1,700
Milesopedia first-year estimateFirst-year valueWelcome bonus$1,700Total$1,700Rewards on your spending are not included. The calculator that adds them from your own profile is on the card's page.
Welcome offer
Up to 100,000 points
Apply Now

on American Express's website

Apply with confidence — no impact on your credit scoreApply with confidenceCheck whether your application will be approved before you submit it, with no impact on your credit score*When you apply for a personal American Express Credit Card, we will tell you whether you are eligible without affecting your credit score. So you can apply with confidence.*Instant decisions are only available for consumer Card applications (also called “personal Cards”).

Terms of the offer

  • Unlock special experiences with the newly designed metal Platinum Card
  • New Platinum® Cardmembers, earn 25,000 Welcome Bonus Membership Rewards® points when you charge $2,000 in purchases to your Card in the first three months of Cardmembership
  • Earn 3 points for every $1 in Card purchases on eligible dining in Canada, 2 points for every $1 in Card purchases on eligible travel, and 1 point for every $1 in all other Card purchases
  • You will have access to a $200 CAD Annual Travel Credit to use towards any single travel booking of $200 or more charged to your Platinum Card and made on www.americanexpress.ca/travel or through Platinum Card® Travel Service
  • Take full advantage of the American Express Global Lounge Collection which unlocks access to over 1200 airport lounges worldwide. This includes The Centurion® Lounge network, Plaza Premium Lounges, and hundreds of other domestic and international lounges designed to enhance your travel experience
  • Enjoy complimentary benefits that offer an average value of $550 USD at over 1,000 extraordinary properties worldwide when you book Fine Hotels & Resorts.
  • Platinum Cardmembers can enjoy access to special events and unique opportunities
  • Enjoy premium benefits at the Toronto Pearson Airport including security bypass, complimentary valet car service and discount car care and parking
  • You will also have access to many leading hotel and car rental companies’ loyalty programs. Our partners include Marriott International, Hilton Hotels and Resorts®, Radisson Hotel Group Hotels and Resorts, Hertz® and Avis®
  • As a Charge Card, the balance must always be paid in full each month. 30% annual interest rate applies to balances not paid in full. Payments must be received and processed by the date of the next monthly statement to avoid interest charges
  American Express is not responsible for maintaining or monitoring the accuracy of information on this website. For full details, current product information and Terms and Conditions, click the Apply now link. Conditions Apply

The Platinum Card® is the best premium card in Canada for travellers.

With this welcome offer, you can earn up to 100,000 Membership Rewards® points:

  • 70,000 points after charging $10,000 to your Card in your first 3 months of Cardmembership
  • 30,000 points when you make a purchase between the 15th and 17th month after your Cardmembership begins

With this Card, you get:

  • 2 points per $1 on eligible dining and delivery purchases in Canada
  • 2 points per dollar on eligible travel purchases charged to the Card
  • 1 point per $1 on all other purchases charged to the Card

You can use your Membership Rewards® points in many ways:

  • Transfer points to airline partners: Aeroplan, Avios (British Airways / Qatar Airways), Flying Blue, Delta SkyMiles, etc.
  • Transfer points to hotel partners, including Hilton Honors and Marriott Bonvoy
  • Redeem points for statement credits to offset any travel purchase charged to your Card (1,000 points = $10)
  • Redeem points for statement credits towards other purchases (1,000 points = $10)
  • And more!

For example, with this welcome offer, if you decide to transfer your Membership Rewards® points to a partner loyalty program, you could earn up to:

  • 100,000 Aeroplan points
  • 100,000 Avios
  • 100,000 Flying Blue Miles
  • 120,000 Marriott Bonvoy points

With this card, you also have advantages for your travels:

  • $200 Annual Travel Credit
  • An annual meal credit of $200
  • A $100 statement credit for NEXUS membership
  • Complimentary access for you and one additional guest to more than 1,550 airport lounges in over 140 countries
  • Hilton Honors Gold status
  • Marriott Bonvoy Gold Elite status
  • Access to the Fine Hotels + Resorts program

Last but not least, The Platinum Card® offers a wide range of insurance coverage: rental car theft and damage, $500,000 travel accident, emergency medical expenses (out-of-province or out-of-country), lost or stolen baggage, flight delays and misdirected baggage, hotel or motel burglary, Purchase Protection, Purchase Security.

Like all American Express Canada Cards, there is no minimum income requirement.

Annual fee

Primary card$799
Additional card$250

Annual income required

Individual$0
Household$0

Conversion fees

2.5%

Earning rate

  • 2xTravel
  • 2xRestaurants
  • 1xAll spending

Value

1st Year Value$1,482
2nd Year Value$470

Transfer partners

  • AeroplanAirline
  • British Airways ClubAirline
  • Cathay Asia MilesAirline
  • Etihad GuestAirline
  • Flying BlueAirline
  • Hilton HonorsHotel
  • Marriott BonvoyHotel

Card benefits

Concierge service24/7
Airport lounge access$400
Travel creditsIncluded

Travel insurance

Travel medical (under 55)Up to $5,000,000 / 15 days
Travel medical (55-64)Up to $5,000,000 / 15 days
Trip CancellationUp to $2,500
Trip InterruptionUp to $2,500
Delayed BaggageUp to $1,000
Lost BaggageUp to $1,000
Flight DelayUp to $1,000
Hotel BurglaryUp to $1,000
Travel AccidentUp to $500,000

Purchase protection

Purchase ProtectionIncluded
Extended Warranty+1 years
Auto Rental Collision (primary)Up to $85,000 / 48 days

Credit History

To calculate your credit limit, most companies will assess your gross annual income and credit reports. Factors that issuers look at include:

  • The amount of credit accounts on your report
  • your repayment history
  • the length of your credit history

Included in this category are the following:

  • student loans
  • personal loans
  • mortgages
  • auto loans
  • any other type of loan

Issuers also look at how many credit inquiries you’ve made and how many negative marks you have on your credit records, such as bankruptcies, collections, civil judgments, or tax liens. The company will then fund your limit accordingly.

Other Variables

Companies all have various underwriting processes. Some issuers will also look at an applicants’ credit files to see their credit limitations on other cards. Other agencies examine other types of ratings, such as a borrower’s bankruptcy score and credit score, to determine how much they will fund the borrower.

Issuers may also consider the applicant’s job history or debt-to-income (DTI) ratio when determining how much risk the application poses. The more trustworthy a person’s work history is and the less debt they have, the more likely they will obtain additional finances.

How Do Cardholders Request Credit Limit Increases?

The likelihood of getting their credit raised increases for applicants with a track record of responsible usage and payback of any amounts in full on or before the billing due date. Companies usually re-evaluate every six months, and if conditions permit, they may automatically boost credit amounts for applicants.

Some issuers will inform cardholders that they qualify for higher credit limits and invite them to apply.

If a cardholder has been a responsible user, they can request an increase. In contrast, cardholders that make late payments or exceed their credit card limitations are more likely to get their credit limit reduced.

Conclusion

An applicant’s credit limit gets determined by credit card companies through a process called underwriting. The underwriting process differs between companies and usually includes the applicant’s income level, credit score, and credit card performance history.

Cardholders can pay on time and not go over their credit limit to increase their limit. It’s recommended that borrowers increase their credit level and use only smaller amounts to improve their credit scores.

Annual fee
$191.88
Our valuation
$255
Milesopedia first-year estimateFirst-year valueWelcome bonus$255Total$255Rewards on your spending are not included. The calculator that adds them from your own profile is on the card's page.
Welcome offer
Up to 15,000 points
Apply Now

on American Express's website

Apply with confidence — no impact on your credit scoreApply with confidenceCheck whether your application will be approved before you submit it, with no impact on your credit score*When you apply for a personal American Express Credit Card, we will tell you whether you are eligible without affecting your credit score. So you can apply with confidence.*Instant decisions are only available for consumer Card applications (also called “personal Cards”).

The American Express Cobalt® Card is the best credit card from American Express, whether you want points for travel or cash back.

American Express Cobalt® Card welcome offer

The welcome bonus is paid out monthly over your first 12 months. You earn 1,250 Membership Rewards points for each monthly billing period in which you charge $750 in net purchases to your card, in any category (1X, 2X, 3X or 5X). That adds up to 15,000 Membership Rewards points over the year, a welcome offer we value at $255.

Earning the full bonus means $9,000 in net purchases spread across 12 monthly billing periods. This offer rewards steady monthly spending rather than one large purchase.

You can use these points as statement credits on everyday or travel purchases, at the same rate either way: 1,000 points = $10.

You can also transfer them to Aeroplan, Avios (British Airways and Qatar Airways), Flying Blue, Marriott Bonvoy or Hilton Honors. With the full welcome bonus, that is a choice between:

  • 15,000 Aeroplan points
  • 15,000 Avios points
  • 15,000 Flying Blue Miles
  • 18,000 Marriott Bonvoy points

If hotel points are what you are after, our ultimate guide to Marriott Bonvoy and our complete map of Marriott Bonvoy hotels by category show what those points can actually buy.

American Express Cobalt® Card benefits

Here is what the card gives you, starting with the benefits cardholders use most.

  • 5X points on eligible eats and drinks in Canada: groceries, restaurants and bars, home food delivery and convenience stores. A spend cap applies.
  • 3X points on eligible streaming subscriptions in Canada.
  • 2X points on eligible gas, public transit and ride sharing purchases in Canada.
  • 1 additional point on eligible hotel and car rental bookings made through American Express Travel Online.
  • 1X point per dollar on everything else, with no category restrictions.
  • Points that hold the same value either way: 1,000 points = $10 as a statement credit, or a 1:1 transfer to several airline and hotel loyalty programs.
  • No minimum income requirement, as with every American Express Canada card.
  • Additional cards at no extra cost: the first and every other supplementary card is $0.
  • The Hotel Collection: a room upgrade when available, 12pm check-in and late check-out when available, and up to $100 USD in hotel credit on amenities charged to the room for a stay of two or more consecutive nights, booked through American Express Travel.
  • Front Of The Line® presale and reserved tickets for concerts and theatre performances, plus offers and events curated for cardmembers through Amex Experiences.
  • A soft credit check before you apply: you can see whether you will be approved with no impact to your credit score. This applies to American Express personal card applications.

To see how it compares with the rest of the line-up, read our round-up of the best credit cards from American Express in Canada.

The 5X categories and where they apply

The 5X rate is the reason most people carry this card. In Canada it covers four kinds of merchants:

  • Groceries: Metro, IGA, Sobeys, Super C, Safeway, Whole Foods.
  • Restaurants and bars: sit-down meals, takeout and drinks.
  • Home food delivery.
  • Convenience stores: Couche-Tard, 7-Eleven.

The 2X rate covers gas stations such as Esso, Shell and Petro-Canada, along with public transit and ride sharing.

With the American Express Cobalt® Card, you earn between 1 and 5 points per dollar:

Category Points per dollar
Grocery (Metro, IGA, Sobeys, Super C, etc.) 5
Home food delivery 5
Restaurants and bars 5
Convenience stores 5
Streaming services 3
Service station 2
Transport 2
Travel 1
Other 1

That works out to a 1 to 5% return on those purchases. For example, if you spend $1,000 per month across groceries, restaurants and food delivery, you earn $50 back per month, or $600 per year from that category alone. Transfer the points to a program such as Aeroplan instead and the return can be higher.

You can also stack these categories with the hundreds of stores that offer 5x points.

American Express Cobalt® Card insurance coverage

The card comes with a broad insurance package. The amounts below are the coverage limits; conditions, age limits and exclusions are set out in the certificate of insurance linked in the Insurance section above.

Travel insurance

  • Emergency medical: up to $5,000,000 for the first 15 days of a trip.
  • Travel accident: accidental death and dismemberment of up to $250,000 for you, your spouse and dependent children under age 23 when travelling on a common carrier (plane, train, bus or ship) and the tickets are charged to your card. Supplementary cardholders and their families are covered too.
  • Flight delay: up to $500 for necessary hotel, meal and sundry expenses bought within 48 hours when you are delayed or denied boarding for four hours or more and no other transportation is available. This $500 is an aggregate limit per occurrence, shared with missed connection and delayed baggage coverage.
  • Delayed baggage: up to $500 for essential clothing and sundries bought within four days when your outbound luggage is delayed six hours or more. This $500 is an aggregate limit per occurrence, shared with missed connection and flight delay coverage.
  • Lost or stolen baggage: up to $500 per occurrence for all insured persons combined, for checked or carry-on baggage and personal effects in transit, when the airline tickets are charged to your card. Within that limit, jewellery is capped at $300 per occurrence and golf clubs, including golf bags, at $250 per occurrence.
  • Hotel and motel burglary: up to $500 against the loss of most personal items if your hotel or motel is burglarized, when the stay is charged to your card.

Rental car insurance

Theft and damage coverage is included for a rental car with an MSRP, for its model year, of up to $85,000 excluding all taxes, for rentals of up to 48 days. To use it, decline the Loss Damage Waiver (LDW) or any similar option from the rental company and charge the full rental to your card. There is no cost for this coverage, and it replaces the daily insurance the rental company charges, usually $16 to $23 per day.

Mobile device insurance

Your device is covered for up to $1,000 per occurrence when it is charged to the card, for up to two years from the date of purchase. The payout is based on the depreciated value of the device, which falls by 2% of the purchase price for every completed month, less a 10% deductible. Theft and accidental damage coverage starts on the 91st day after purchase, because the first 90 days are covered by purchase protection.

Purchase protection and extended warranty

Eligible items charged to your card are insured against accidental physical damage or theft for 90 days from the purchase date, up to $1,000 per occurrence for all items combined. The card also extends the original manufacturer’s warranty by up to one additional year on eligible items, with indemnification limited to $10,000 per insured item and $25,000 per Cardmember per policy year for all items combined.

American Express Cobalt® Card fees

  • Card fee: $15.99 per month, which equals $191.88 per year, for residents outside Quebec. Quebec residents are billed $191.88 per year.
  • Additional cards: $0.
  • Purchase interest rate: 21.99%.
  • Cash advance interest rate: 21.99%.
  • Foreign transaction fee: 2.5%.
  • Minimum income required: none.

Because the fee is billed monthly rather than in one annual charge, you can stop and restart the cost in step with how much you are actually using the card.

Annual fee

Primary card$191.88
Additional card$0

Annual income required

Individual$0
Household$0

Conversion fees

2.5%

Earning rate

  • 5xRestaurants
  • 5xGroceries
  • 5xConvenience
  • 3xStreaming
  • 2xTransit
  • 2xGas & EV
  • 1xAll spending

Value

1st Year Value$1,828
2nd Year Value$799

Transfer partners

  • AeroplanAirline
  • British Airways ClubAirline
  • Cathay Asia MilesAirline
  • Etihad GuestAirline
  • Flying BlueAirline
  • Hilton HonorsHotel
  • Marriott BonvoyHotel

Travel insurance

Travel medical (under 55)Up to $5,000,000 / 15 days
Travel medical (55-64)Up to $5,000,000 / 15 days
Delayed BaggageUp to $500
Lost BaggageUp to $500
Flight DelayUp to $500
Hotel BurglaryUp to $500
Travel AccidentUp to $250,000

Purchase protection

Purchase ProtectionUp to $1,000 / 90 days
Extended Warranty+1 years
Mobile DeviceUp to $1,000 / 2 years
Auto Rental Collision (primary)Up to $85,000 / 48 days

Our featured card

Featured
Annual fee
$120
Our valuation
$990
Milesopedia first-year estimateFirst-year valueWelcome bonus$990Total$990Rewards on your spending are not included. The calculator that adds them from your own profile is on the card's page.
Welcome offer
Up to 110,000 points
Ends Sep 22, 2026
Apply Now

on American Express's website

Apply with confidence — no impact on your credit scoreApply with confidenceCheck whether your application will be approved before you submit it, with no impact on your credit score*When you apply for a personal American Express Credit Card, we will tell you whether you are eligible without affecting your credit score. So you can apply with confidence.*Instant decisions are only available for consumer Card applications (also called “personal Cards”).

The Marriott Bonvoy® American Express®* Card is the best credit card in Canada for free hotel nights.

New Cardmembers can earn up to 110,000 Marriott Bonvoy® points with the current offer:

  • Earn 80,000 points after you spend $6,000 on your Card in your first 6 months of Cardmembership.
  • Plus, earn 30,000 points by making a purchase during your 15th month of Cardmembership.

This offer ends on September 22, 2026. The annual fee is $120, and there is no annual fee on Additional Cards, so you can add a partner or a family member at no extra cost.

Every year after your first Card anniversary, you receive an Annual Free Night Award good for a redemption of up to 35,000 points at eligible hotels and resorts worldwide. At a valuation of 0.9 cents per Marriott Bonvoy point, that certificate is worth roughly $315, which on its own more than covers the $120 annual fee. That is the main reason to keep this Card year after year instead of cancelling it.

To get the most out of the certificate, aim it at a night that would otherwise price close to the 35,000 point ceiling.

The Card also gives you 15 Elite Night Credits each calendar year and automatic Marriott Bonvoy Silver Elite status. Those credits count toward the next Elite tier, so you begin every year 15 nights ahead of where you would otherwise start.

You move up to Gold Elite status automatically when you reach $30,000 in purchases on the Card in a year, or when you combine 10 qualifying paid nights within one calendar year with the 15 Elite Night Credits from your Card.

Marriott Bonvoy points are generally valued at 0.9 cents each. On that basis, the 110,000 point welcome offer is worth about $990, and an Annual Free Night Award used at its full 35,000 point ceiling is worth about $315.

Marriott Bonvoy points pull their weight on free nights rather than on gift cards or merchandise, which is why this Card should be judged on the hotel stays it produces.

You earn 5 points per dollar on eligible purchases at participating Marriott Bonvoy hotels and 2 points per dollar on all other purchases. Points can be redeemed for free nights with no blackout dates at more than 7,000 hotels around the world.

The Card carries a solid package of coverages: $500,000 travel accident insurance, flight delay, baggage delay, lost or stolen baggage and hotel or motel burglary at $500 each, car rental theft and damage up to $85,000 for rentals of up to 48 days, Purchase Protection for 90 days and a one year Extended Warranty.

Two things to plan around: the 2.5% foreign transaction fee on purchases made in a foreign currency, and the 21.99% purchase interest rate, which makes this a Card to pay in full every month. Like all American Express Canada Cards, no minimum income is published for this Card, and you can see whether you would be approved before you apply, with no impact on your credit score.

Annual fee

Primary card$120
Additional card$0

Annual income required

Individual$0
Household$0

Conversion fees

2.5%

Earning rate

  • 5xMarriott Bonvoy hotels
  • 2xAll spending

Value

1st Year Value$1,437
2nd Year Value$312

Travel insurance

Delayed BaggageUp to $500
Lost BaggageUp to $500
Flight DelayUp to $500
Hotel BurglaryUp to $500
Travel AccidentUp to $500,000

Purchase protection

Purchase ProtectionIncluded
Extended Warranty+1 years
Auto Rental Collision (primary)Up to $85,000 / 48 days

Our editorial integrity

Our reviews and rankings are based on an objective assessment. Advertisers do not influence our content. We may receive compensation through some links; our analysis and opinions remain independent.