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Costco dominates the Canadian retail . The warehouse giant operates 109 warehouses across Canada as part of its 905 global locations, making the Costco Capital One Mastercard one of the most widely held co-branded credit cards in the country. If you carry one in your wallet, you already know the value. But are you paying your bill in a way that protects - and maximizes - that value?
This guide covers every method to make your Costco Mastercard payment, how to log in to your Capital One account, and how to squeeze every dollar of cashback from your spending. We also explain how to earn rewards on expenses the Costco card doesn't cover well - like rent and utility bills.
The stakes are real. Costco's fiscal Q1 2026 results show accrued member rewards reached $2,712 million as of November 2025. That's billions flowing back to cardholders - but only those who keep their accounts in good standing and pay on time. A single missed payment can trigger interest charges that wipe out months of cashback.
For a broader look at how Canadians can earn rewards while paying credit card bills, read our complete guide to credit card bill payment cashback in Canada. Below, we focus specifically on the Costco card: its rewards structure, every payment channel available, login details, and tips to fill the cashback gaps the card leaves behind.
The Costco Capital One Mastercard is Canada's premier warehouse club credit card, issued by Capital One in partnership with Costco Wholesale. It targets everyday spending categories where Costco members already spend heavily - restaurants, gas stations, and of course, Costco itself.
Here's how the cashback breaks down for the Canadian card:
There's no annual fee for the card itself, provided you hold an active Costco membership. A Gold Star membership costs roughly $65 per year, while the Executive membership runs about $130 per year. Without a valid membership, you cannot hold the card - it's tied directly to your Costco account.
To appreciate how embedded this card is in Canadian spending habits, consider Costco's financials. The company reported Q1 fiscal 2026 revenue of $67,307 million, including $1,329 million in membership fees alone. That membership revenue fuels the rewards program, and the Costco Capital One Mastercard sits at the center of it all. Understanding how to pay this card efficiently - and on time - protects your access to one of Canada's richest cashback programs.
If you're comparing this card against others for specific purchases like rent, check out our list of the best credit cards to pay rent in Canada.
Costco Capital One Mastercard Cashback Rates
| Spending Category | Cashback Rate | Example Annual Spend | Estimated Annual Cashback |
|---|---|---|---|
| Costco Purchases | 2% | $6,000 | $120.00 |
| Restaurants | 3% | $3,600 | $108.00 |
| Gas Stations | 4% | $2,400 | $96.00 |
| All Other Purchases | 1% | $4,800 | $48.00 |
Capital One gives you multiple ways to make your Costco Mastercard payment. Choose the method that fits your routine - just make sure you pay before the due date to avoid interest and protect your cashback eligibility.
The simplest approach for most Canadians is paying through their bank's online bill payment system. Every major bank - RBC, TD, Scotiabank, BMO, CIBC, and credit unions - supports this method.
Payments through online banking typically take one to three business days to post. Send your payment at least three business days before the due date to avoid late fees. For tips on managing different payment methods across your accounts, we have a detailed comparison.
You can also pay directly through Capital One's website. After logging in at capitalone.ca, navigate to your Costco Mastercard account and select "Make a Payment." You'll link a Canadian chequing account, then choose to pay the minimum, the statement balance, or a custom amount. This method gives you real-time visibility into your balance and payment history.
The Capital One app (available on iOS and Android) mirrors the online portal experience. Open the app, tap your Costco Mastercard, and select "Make a Payment." The app also sends push notifications before your due date - a handy safeguard against missed payments. If you've ever dealt with a failed payment situation, you know how valuable those reminders can be.
Setting up pre-authorized payments is the "set it and forget it" option. Through the Capital One portal or app, you can authorize automatic monthly withdrawals from your chequing account. You choose whether to auto-pay the minimum, the statement balance, or the full balance.
We strongly recommend auto-paying the full balance. This eliminates interest charges entirely and ensures your cashback stays intact. Just confirm your chequing account has sufficient funds each month. If autopay ever fails unexpectedly, our guide on fixing failed auto-pay walks you through the troubleshooting steps.
You can call Capital One's customer service line to make a payment over the phone. A representative will process the payment from your linked bank account. This method is slower and less convenient than digital options, but it works if you're unable to access online banking temporarily.
Unlike some store-branded cards, you cannot pay your Costco Mastercard bill at the warehouse checkout or membership desk. All payments route through Capital One. Keep this in mind if you prefer in-person transactions.
Costco Mastercard Payment Methods Compared
| Payment Method | Processing Time | Convenience | Best For |
|---|---|---|---|
| Online Bill Pay | 1-3 business days | High | Scheduled payments |
| Costco App Payment | Same day | Very High | On-the-go members |
| Auto-Pay (Bank Acct) | On due date | Very High | Avoiding late fees |
| Phone Payment | Same day | Moderate | Non-tech users |
| Mail-in Check | 7-10 business days | Low | Paper records |
Thousands of Canadians search for "costco mastercard login" every month. Here's exactly where to go and what to do.
Your Costco Mastercard account lives on Capital One's platform, not on Costco.ca. To access it:
If you haven't set up online access yet, click "Set Up Online Access" and follow the registration steps. You'll need your Costco Mastercard number, your date of birth, and your Social Insurance Number (SIN) for verification.
Download the Capital One Canada app from the App Store or Google Play. Sign in with the same credentials you use for the web portal. The app supports biometric login (Face ID, fingerprint) for faster access on subsequent visits.
Your Capital One dashboard gives you full control over your Costco Mastercard account:
For a deeper look at managing Capital One cards generally, see our Capital One Mastercard payment guide.
Every eligible purchase earns cashback at the rates outlined above - 3% at restaurants, 2% at Costco and gas, 1% everywhere else. Cashback accrues automatically. You don't need to activate categories or rotate bonus spending.
However, a few purchase types typically don't earn cashback or earn at the base 1% rate. These include balance transfers, cash advances, and certain fee-based transactions. Always check your cardholder agreement for the full list of exclusions.
Unlike many cashback cards that let you redeem rewards monthly, the Costco Capital One Mastercard pays out cashback once per year. You receive an annual statement credit or certificate - typically issued around the anniversary of your card membership. You can apply it as a credit to your account or, in some cases, pick it up at your local Costco warehouse.
This annual payout structure means patience is essential. If you cancel the card mid-year, you may forfeit unredeemed cashback. Data from Costco's Q3 fiscal 2025 report shows accrued member rewards hit $2,583 million by May 2025, growing steadily from $2,435 million just eight months earlier. That growth confirms more members are earning - and waiting for - their annual reward payouts.
Costco Executive Members earn an additional 2% reward on qualifying Costco purchases (up to a cap) through their membership - separate from the credit card cashback. Stack this with the card's 2% Costco cashback, and you effectively earn 4% back on warehouse purchases. For high-volume Costco shoppers, the $130 Executive membership often pays for itself.
If you're exploring ways to build your credit in Canada while earning rewards, pairing the Costco card with disciplined on-time payments creates a strong credit history over time.
Neobanc lets Canadians earn up to 1% cashback when paying bills — including your monthly credit card payments. It adds up fast.
Explore CashbackThe Costco card shines at restaurants (3%) and gas stations (2%). It's a solid default for Costco runs. But at 1% on "everything else," it falls short compared to other cards that offer 1.5% or 2% flat-rate cashback on general spending.
Build a simple two-card strategy:
For a category-by-category breakdown, our Mastercard bill payment cashback guide covers how to maximize returns across your entire spending.
This seems obvious, but it's the single biggest cashback killer. The Costco Mastercard's interest rate (typically around 20.99% for purchases) will obliterate your 1-3% cashback if you carry a balance month to month. Set up autopay for the full balance. Done.
As mentioned, Executive Members stack an extra 2% on Costco purchases. If your household spends $6,500+ per year at Costco, the upgraded membership cost ($65 extra) pays for itself through the Executive reward alone - before credit card cashback even enters the picture.
Since cashback pays out annually, log in to your Capital One account quarterly to confirm your rewards are accruing correctly. Disputes are easier to resolve when caught early rather than at payout time.
If you also run a business and process payments, be cautious. Clearly Payments warns about teaser rates in Costco-affiliated credit card processing services. Introductory rates may look attractive but can increase significantly after the promotional period. Meanwhile, Costco payment processing advertises rates starting at 1.10% plus 12 cents for qualified in-person transactions and 1.90% plus 25 cents for online transactions, with a $20 monthly minimum charge.
The Costco Capital One Mastercard earns just 1% on non-category spending. That includes some of your largest monthly expenses:
At 1% cashback, a $2,000 monthly rent payment earns just $20. And most landlords don't accept credit cards directly - meaning that 1% may not even be an option through traditional channels.
This is where Neobanc fills the gap. We let you pay rent and earn cashback using your credit card - including your Costco Mastercard or any other card in your wallet. The same goes for utility and bill payments and even mortgage payments.
Instead of leaving thousands of dollars in annual rent on the table, you turn those payments into rewards. Pair this with your Costco card's strength at restaurants and gas, and you've built a cashback strategy that covers virtually every dollar you spend. Use our cashback calculator to see exactly what your rent and bills could earn you each year.
Paying rent through a credit card via Neobanc also helps you build credit through rent payments - something traditional rent checks and e-transfers never do. If you're a renter looking to pay rent with Mastercard in Canada, we make it straightforward. For landlords open to new payment arrangements, we also explain how to ask your landlord to change payment methods.
Whether you're saving for a down payment program, evaluating mortgage prepayment options, or considering breaking a mortgage early, every dollar of cashback earned on monthly bills accelerates your financial goals.
Yes. You can pay your Costco Mastercard online through Capital One's website at capitalone.ca, the Capital One mobile app, or your bank's online bill payment system. Add "Capital One - Costco Mastercard" as a payee in your bank and enter your account number to send payments.
No annual fee applies for the credit card itself. However, you must maintain an active Costco membership (Gold Star at ~$65/year or Executive at ~$130/year) to keep the card. If your membership lapses, the card may be closed.
Cashback pays out once per year as an annual reward certificate or statement credit. You cannot redeem cashback monthly. Plan accordingly and avoid cancelling the card before your annual payout.
Log in at capitalone.ca, not costco.ca. You can also use the Capital One Canada app. First-time users need to register for online access with their card number, date of birth, and SIN.
No. You cannot make credit card payments at Costco locations. All bill payments go through Capital One's channels - online, through the app, by phone, or via your bank's bill payment service.
The card earns 1% on purchases that fall outside the restaurant and gas/Costco categories. However, most landlords don't accept credit cards directly. Services like Neobanc enable you to pay rent with your credit card and earn rewards on what's typically your largest monthly expense. Browse our full credit card bill payment cashback guide for details.
Contact Capital One immediately to resolve the issue. Failed payments can result from insufficient bank funds, incorrect account numbers, or bank processing errors. If you set up autopay and it fails, check our advice on fixing recurring payment issues. Capital One may charge a late fee if payment isn't received by the due date.
Executive Members earn an additional 2% reward on qualifying Costco purchases through their membership, on top of the 2% credit card cashback. This means you can earn up to 4% total on Costco warehouse spending when you hold both. Visit our blog for more strategies on stacking Canadian rewards programs.
Your Costco Capital One Mastercard is a strong earner for restaurants, gas, and warehouse runs. But the real cashback wins come from building a complete strategy that covers every bill you pay - rent, utilities, mortgage, and more.
Pay your Costco card on time (autopay the full balance), track your annual reward accrual through the Capital One portal, and don't leave your biggest monthly expenses earning zero rewards. With the right combination of your Costco card and a service like Neobanc, you can earn cashback on virtually every dollar that leaves your account each month.
Explore cashback on gift cards, check your potential rewards with our cashback calculator, or browse the FAQ to get started. Your Costco membership already saves you money at the warehouse - now make the payments work just as hard.
Use Neobanc to pay rent, bills, and mortgages with your Costco Mastercard — and stack real cashback on every payment.
Start Earning NowYou can pay your Costco Mastercard online through two main channels. The first is your bank's online bill payment system — add Capital One Costco Mastercard as a payee, enter your account number, and submit payment. The second is logging in directly at capitalone.ca, where you can link a chequing account and pay the minimum, statement balance, or a custom amount. Bank payments typically take one to three business days to post, so submit at least three days before your due date.
Your Costco Mastercard account is managed through Capital One, not Costco.ca. Visit capitalone.ca and click Sign In to access your dashboard, where you can view balances, make payments, track cashback, and download statements. You can also use the Capital One Canada mobile app with the same credentials. If you haven't registered, select Set Up Online Access and verify your identity with your card number, date of birth, and Social Insurance Number.
There is no annual fee for the Costco Capital One Mastercard itself. However, you must hold an active Costco membership to keep the card. A Gold Star membership costs roughly $65 per year, while the Executive membership runs about $130 per year. Without a valid membership, you cannot hold the card — it is tied directly to your Costco account.
Costco Mastercard cashback accrues automatically on every eligible purchase at tiered rates: 3% on restaurant spending, 2% on Costco purchases and gas at any station, and 1% on everything else. You do not need to activate categories or rotate bonus spending. Accumulated cashback is typically issued once per year as a reward certificate, redeemable at Costco warehouses. Costco reported accrued member rewards of $2,712 million as of November 2025.
The Costco Capital One Mastercard earns only 1% cashback on general purchases, which includes rent. Since rent is typically a cardholder's largest monthly expense, that low return leaves significant cashback on the table. Platforms like Neobanc let you pay rent with a credit card and earn rewards at higher effective rates, helping fill the gap the Costco card leaves on non-bonus categories like rent and utility bills.
The best way to maximize Costco Mastercard rewards is to concentrate restaurant spending at 3% cashback and always use the card for gas and Costco purchases at 2%. Pay the full statement balance every month to avoid interest charges that can easily wipe out months of earned cashback. For spending categories where the card only earns 1% — like rent and bills — consider using a higher-earning card or a platform like Neobanc to capture additional rewards.
Yes, you can set up auto-pay for your Costco Mastercard through the Capital One online portal or mobile app. You authorize automatic monthly withdrawals from a linked chequing account and choose whether to pay the minimum, the statement balance, or the full balance. Paying the full balance automatically each month is strongly recommended — it eliminates interest charges entirely and ensures your cashback rewards stay intact. Just confirm sufficient funds are available before each withdrawal date.
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