Online payment gateways: a guide for accountants and bookkeepers

Published Wednesday 17 June 2026

Table of contents

• How payment gateways work for your clients
• Types of payment gateways
• Benefits of online payment gateways for your clients
• How payment gateways support accounting workflows
• How to choose the right payment gateway
• Payment gateways available in Canada
• Security and compliance considerations
• How to help clients set up a payment gateway
• Streamline payments with Xero
• FAQs on online payment gateways

Key takeaways

• Online payment gateways let your clients accept credit card, debit, and digital wallet payments on their invoices, reducing the time it takes to collect payment. Xero customers who use online invoice payments get paid up to twice as fast.
• Choosing the right gateway involves evaluating transaction fees, integration with accounting software, supported payment methods, and settlement times. Your advisory role is key in guiding clients through these decisions.
• Payment gateways that integrate directly with cloud accounting software automate reconciliation, reduce manual data entry, and give you real-time visibility into client cash flow.
• Canadian businesses should consider gateways that support Interac e-Transfer, comply with PCI DSS standards, and meet PIPEDA privacy requirements.

How payment gateways work for your clients

When your clients add a "pay now" button to their online invoices, the payment gateway handles authorization, encryption, and settlement behind the scenes. The practical result is that customers can pay by credit card, debit card, or digital wallet straight from the invoice.

For your practice, the key consideration is how the gateway connects to your client's accounting software. A well-integrated gateway automates the link between payment and invoice, which affects reconciliation speed, fee tracking, and cash flow visibility. The gateway choice also determines which payment methods are available, how quickly funds settle, and what compliance obligations your client takes on.

Types of payment gateways

Not all payment gateways work the same way, and the right fit depends on your client's business model. Here are the three main types you'll encounter when advising clients.

• Hosted payment gateways. The customer is redirected to the gateway provider's secure page to complete payment. This is the simplest option to set up and shifts PCI compliance responsibility to the provider. Stripe Checkout and PayPal are common examples.
• Self-hosted (integrated) gateways. Payment is collected directly on your client's website without redirecting the customer. This provides a smoother checkout experience but requires more technical setup and greater compliance obligations.
• API-based gateways. These offer the most flexibility, allowing developers to build fully custom payment experiences. They're best suited to clients with larger e-commerce operations or specific workflow requirements.

For most small business clients, hosted gateways offer the best balance of simplicity, security, and cost. If a client needs a more tailored solution, an API-based gateway may be worth exploring.

Benefits of online payment gateways for your clients

Late payments remain one of the biggest cash flow challenges your clients face. Research suggests that roughly 50–60% of invoices are paid past their due date. Payment gateways directly address this by making it easier and faster for customers to pay.

• Faster payment collection. Xero customers who use online invoice payments get paid up to twice as fast. When a "pay now" button is right there on the invoice, customers can settle up immediately rather than putting it off.
• Improved cash flow predictability. Faster collections mean more predictable cash flow, which makes your forecasting and advisory conversations more grounded in reality.
• Customer convenience. 86% of customers say they pay with credit or debit cards. Offering card payments on invoices meets customers where they already are. On the other hand, 38% of customers say they get annoyed when they can't pay the way they want to.
• Reduced follow-up time. Fewer overdue invoices mean less time spent on payment reminders and collections, freeing up your client to focus on running their business.

These benefits also create advisory opportunities. Helping a client adopt payment gateways is a practical, high-impact recommendation that demonstrates the value of your guidance.

How payment gateways support accounting workflows

Beyond helping your clients get paid, payment gateways can significantly streamline your own workflows when they integrate with cloud accounting software.

• Automatic reconciliation. When a payment gateway connects to Xero, incoming payments are matched to the correct invoices automatically. This eliminates manual matching and reduces errors.
• Real-time cash flow data. Integrated gateways feed payment data directly into your accounting platform, giving you up-to-date cash flow figures without waiting for bank feeds to sync.
• Less manual data entry. Payment details, fees, and settlements flow through automatically, cutting down the time you spend on data entry for each client.
• Cleaner audit trails. Every transaction is recorded with timestamps, amounts, and reference numbers, making period-end reviews and audits more straightforward.

If you're managing multiple clients, these efficiencies compound. Integrated payment gateways can save you significant time across your practice each month.

How to choose the right payment gateway

When clients ask for your recommendation on a payment gateway, there are several factors worth evaluating together. Here's what to consider in those advisory conversations.

• Transaction fees. Most gateways in Canada charge between 2.4% and 2.9% plus C$0.30 per transaction. Compare pricing structures carefully, as some providers offer lower rates for higher volumes.
• Accounting software integration. A gateway that syncs directly with your client's accounting platform saves time and reduces errors. Check whether the integration supports automatic reconciliation and real-time data syncing.
• Supported payment methods. Look for gateways that accept credit cards, debit cards, and digital wallets at minimum. In Canada, Interac e-Transfer support can also be valuable for domestic transactions.
• Settlement times. How quickly funds reach your client's bank account matters for cash flow. Settlement periods vary from one to three business days depending on the provider.
• Security and compliance. Confirm the gateway is PCI DSS compliant and offers features like tokenisation and fraud detection. More on this in the security section below.
• Ease of setup. Consider your client's technical comfort level. Hosted gateways are typically the fastest to implement, with no development work required.

The right gateway depends on the client's transaction volume, customer base, and technical setup. Use these criteria as a framework for structured advisory conversations.

Payment gateways available in Canada

The Canadian market has several well-established payment gateway options. Here's an overview of the most widely used providers to help you advise clients on what's available.

• Stripe. Popular with online businesses and developers. Offers transparent pricing (2.9% + C$0.30 per transaction), strong API tools, and integration with most accounting platforms including Xero.
• Square. Well-suited to businesses that sell both online and in person. Offers point-of-sale hardware alongside online payment processing, with competitive rates for in-person transactions.
• Moneris. A Canadian-owned payment processor widely used by mid-sized and larger businesses. Offers Interac Debit acceptance, which is unique to the Canadian market.
• PayPal. A payment service provider that many customers already have accounts with. Useful for clients whose customers prefer paying through a familiar platform, though fees can be higher for smaller transactions.
• Helcim. A Calgary-based provider focused on transparent pricing with interchange-plus rates. Known for lower costs at higher transaction volumes and strong Canadian customer support.

Each provider has different strengths depending on the client's industry, transaction volume, and whether they need in-person payment capabilities alongside online processing. Avoid recommending a single provider without understanding the client's specific needs first.

Security and compliance considerations

Payment security is a topic your clients will have questions about, and it's an area where your guidance adds real value. Here are the key compliance and security factors to keep in mind.

• PCI DSS compliance. The Payment Card Industry Data Security Standard (PCI DSS) sets requirements for any business that processes card payments. Hosted gateways handle most PCI compliance obligations on behalf of your client, which is one reason they're popular with smaller businesses.
• PIPEDA requirements. Canada's Personal Information Protection and Electronic Documents Act (PIPEDA) governs how businesses collect, use, and store personal information, including payment data. Make sure your client's chosen gateway complies with these privacy requirements.
• Tokenisation and encryption. Reputable gateways use tokenisation to replace sensitive card numbers with unique tokens, and encryption to protect data in transit. These features reduce the risk of data breaches significantly.
• Fraud prevention tools. Look for gateways that offer built-in fraud detection, address verification, and 3D Secure authentication. These tools help protect your clients and their customers from fraudulent transactions.

Advising clients on payment security is a natural extension of your risk management role. It positions you as a trusted advisor on operational decisions, not just compliance work.

How to help clients set up a payment gateway

Setting up a payment gateway is straightforward, and walking your clients through it is a practical way to add value. Here's a step-by-step approach you can follow.

1. Assess the client's needs

Start by understanding how the client currently collects payments, what methods their customers prefer, and their average transaction volume. This shapes which gateway type and provider will work best.

2. Select and set up the gateway

Help your client create an account with the chosen provider and connect it to their accounting software. Most gateways, including those that integrate with Xero, offer guided setup wizards with no upfront costs.

3. Configure payment options on invoices

Set up invoice templates with "pay now" buttons enabled. Consider creating templates both with and without payment options, so the client can choose when to offer online payment based on the invoice amount or customer.

4. Test the payment flow

Run a test transaction to confirm everything works correctly, from the customer's payment experience through to reconciliation in the accounting software. Check that fees are recorded accurately.

5. Review and advise on fees

Walk the client through the fee structure. Many businesses keep costs manageable by offering online payment only on invoices under a certain amount, such as C$5,000. Some gateways also allow surcharging, though rules vary by province in Canada.

Streamline payments with Xero

Payment gateways are one of the most practical tools you can recommend to clients looking to improve cash flow and reduce late payments. By integrating a gateway with Xero's payment services, your clients can accept online payments directly from their invoices, while you benefit from automatic reconciliation and real-time financial data.

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FAQs on online payment gateways

Here are answers to some frequently asked questions about online payment gateways in Canada.

Which payment gateway is best in Canada?

The best gateway depends on your client's needs. Stripe and Square are popular for small businesses, Moneris is widely used by larger operations, and Helcim offers competitive interchange-plus pricing. Evaluate based on transaction volume, fees, and integration requirements.

What are the payment options for small businesses in Canada?

Small businesses in Canada can accept credit cards, debit cards, digital wallets, Interac e-Transfer, and bank transfers through various payment gateways. Most gateways support major card networks including Visa, Mastercard, and American Express.

Are payment gateway fees tax-deductible for clients?

Yes. Payment processing fees are generally deductible as a business expense in Canada. Advise your clients to track gateway fees separately in their chart of accounts so they can claim the deduction accurately at tax time. Most integrated gateways record fees as individual transactions, making this straightforward.

Is there a Canadian alternative to PayPal?

Helcim and Moneris are both Canadian-owned payment processors. Helcim is based in Calgary and focuses on transparent pricing, while Moneris is one of Canada's largest payment processors with broad Interac Debit support.

What should you do if a client's gateway doesn't integrate with their accounting software?

If direct integration isn't available, look for a third-party connector app or middleware that bridges the gap. Alternatively, consider switching the client to a gateway that does integrate natively; the time saved on manual reconciliation usually outweighs the effort of migrating. In the short term, setting up a bank rule for recurring gateway deposits can reduce manual work.