Business Finance

Accounts Receivable in Canada: How to Track Unpaid Invoices and Improve Cash Flow

A practical guide for Canadian small businesses to organize accounts receivable, monitor overdue invoices, follow up professionally and protect cash flow.

Sending an invoice is an important step toward getting paid, but it is not the same as receiving money. For Canadian freelancers, contractors and small-business owners, unpaid invoices can create a cash-flow squeeze even when sales look strong. A simple accounts receivable system helps you see who owes you money, what is overdue and what to do next.

This guide explains accounts receivable (AR) in plain language, with a practical weekly routine and a sample invoice-aging report. It is general bookkeeping education, not personalized tax or legal advice.

What is accounts receivable?

Accounts receivable is money customers owe your business for goods or services you have already provided and billed but have not yet collected. For example, if you issue a $1,000 invoice with payment due in 30 days, that unpaid amount is part of your receivables until the customer pays or the balance is otherwise resolved.

AR is different from accounts payable, which is money your business owes suppliers. It is also different from cash in your bank account: an invoice may be recorded as a sale, depending on your accounting method, while the related cash has not yet arrived.

Why unpaid invoices matter for cash flow

Imagine a small consulting business invoices $12,000 in a month but collects only $7,000 before rent, wages, software and supplier bills come due. The business may have healthy sales but only $7,000 of incoming cash available that month. The other $5,000 is still outstanding and cannot be used to pay bills until collected.

That gap can force owners to delay purchases, use savings or borrow. Tracking AR makes the gap visible early, so you can follow up before a payment becomes seriously overdue.

What to include on each customer invoice

• Your business name and contact details, and the customer's name and billing details.
• A unique invoice number and issue date.
• A clear description of the products or services supplied and the applicable dates.
• Prices, discounts and the total amount due.
• Applicable GST/HST details, including your registration number when required.
• The payment due date, accepted payment methods and where to send payment.
• Any agreed payment terms, such as deposits or instalments.

Keep the invoice and any related contract, work approval, correspondence and payment evidence. If you collect GST/HST, make sure invoices contain the information relevant to your transactions; documentation requirements vary with the circumstances.

Build a simple accounts receivable tracker

You can begin with a spreadsheet or bookkeeping software. Give every invoice its own row and update it when you receive a payment, issue a credit note or correct an error.

For each invoice, the basic calculation is outstanding balance = original invoice total minus payments received minus valid credits or adjustments. Keep GST/HST and accounting treatment consistent with your actual records rather than treating every deposit as new sales revenue.

Use an invoice-aging report to prioritize follow-ups

An AR aging report groups unpaid balances by how long they have been outstanding. Businesses often use categories such as current, 1–30 days overdue, 31–60 days overdue, 61–90 days overdue and more than 90 days overdue. These are bookkeeping categories, not CRA filing deadlines.

Review older balances first, but do not ignore a large invoice that is just becoming overdue. Compare the aging report to your bank deposits and customer statements so that payments are not missed or applied to the wrong invoice.

A practical weekly accounts receivable routine

1. Monday: review open invoices. Check due dates and confirm that new invoices were sent to the right contact.
2. Match payments. Review bank deposits, e-transfers and payment-processor settlements; apply each receipt to the correct customer invoice.
3. Send polite reminders. Start with a friendly note referencing the invoice number, amount and due date, with a copy of the invoice attached if needed.
4. Resolve disputes quickly. Ask whether a missing purchase order, incorrect description or billing issue is delaying approval.
5. Escalate consistently. For older overdue amounts, follow your written credit terms and consider a payment plan or professional collection advice where appropriate.
6. Update your cash forecast. Use realistic expected payment dates rather than assuming every invoice will be paid immediately.

A professional reminder can be simple: “Our records show invoice INV-1042 for $800 was due on October 31. Could you confirm its payment status? Please let us know if you need another copy or if there is a billing issue.”

How accounts receivable affects your bookkeeping and taxes

Bookkeeping treatment depends on your accounting method and business circumstances. Under accrual accounting, revenue is generally recognized when earned rather than only when cash arrives. Some businesses have different permitted methods or specific rules. A cash deposit that settles an existing receivable should not be recorded as revenue a second time.

GST/HST timing also deserves attention. For many taxable sales, GST/HST becomes payable based on when consideration is paid or becomes due, whichever is earlier, subject to applicable rules. An unpaid invoice therefore does not automatically mean the GST/HST can be ignored until collection. Businesses should review their invoicing and remittance obligations using the current CRA guidance.

If a customer never pays, do not simply delete the invoice. There may be separate accounting, income-tax and GST/HST bad-debt rules, with documentation and eligibility requirements. Review the facts before recording a write-off or claiming an adjustment.

Five mistakes to avoid

• Mixing invoices with deposits: Recording a customer payment as another sale can overstate revenue.
• Not applying partial payments: The AR report may show the full invoice even though some cash has arrived.
• Failing to follow up: Small billing errors can remain unresolved for months.
• Ignoring processor fees: A net payment from a card processor may be less than the gross invoice, but the difference may be a fee rather than an unpaid customer balance.
• Writing off balances without evidence: Keep collection notes, correspondence and supporting documents.

Month-end accounts receivable checklist

• Reconcile customer receipts to the bank and payment processors.
• Review open invoices, credit notes, partial payments and customer deposits.
• Check overdue balances and document follow-up actions.
• Investigate unusual negative balances or unapplied payments.
• Compare the AR summary with the accounts receivable balance in your general ledger, where applicable.
• Update the next 30–60 days of expected cash collections.
• Retain invoices and supporting business records in an organized, retrievable format.

For more bookkeeping fundamentals, read our monthly bank reconciliation checklist and small-business bookkeeping checklist.

Get your invoices and business records tax-ready with TiKi Tax

Clear receivable records make it easier to understand what customers owe, reconcile deposits and prepare reliable financial information. Explore the TiKi Tax app to organize your business records, or visit TiKi Tax to learn about bookkeeping, GST/HST and tax preparation support for Canadian small businesses.

Educational information only. Tax treatment, collection rights and reporting obligations depend on your facts and the rules in force. Consult a qualified professional for advice about your situation.

Official sources

• Official CRA source 1
• Official CRA source 2