What Records Should You Keep From Day One?

Built to Thrive Explainer
Read time: 3-4 minutes

Where this fits: This explainer supports the Tax & Financial Discipline guide path.
Updated on: April 24, 2026

Most small business owners do not need a complicated record-keeping system on day one. They need enough structure to make the business easy to understand later.

Record-keeping problems usually start when early activity is handled casually. A receipt is not saved, a payment is not labelled, a transfer has no explanation, or a bank transaction shows that money was spent without showing what was purchased or why it belonged to the business. None of these issues may seem serious at the time, but together they make tax filing, year-end preparation, and CRA support much harder than they need to be.

The goal from the beginning is simple: keep enough evidence to show what happened in the business. That means keeping clear support for income, expenses, receipts, GST/HST, owner transfers, and anything that may need attention at year-end.

The records that matter most

Start with the records that explain how money moves through the business.

The first category is income records. These show what the business earned, who paid you, when they paid, how much they paid, and what the payment was for. Depending on your business, this may include invoices, e-transfer confirmations, deposit records, platform payout reports, sales reports, or receipts issued to customers. If you use invoices, keep both the invoice and the payment record so the income trail is complete.
The second category is expense support. For each business purchase, keep the receipt or supplier invoice whenever possible. A bank or credit card statement is useful, but it usually is not enough by itself. It may show that money was spent, but it often does not show what was purchased, whether GST/HST was charged, or why the expense was business-related. A short note can help if the business purpose is not obvious. For example, “Staples — printer paper and folders for client files” is much more useful than an unexplained card transaction.
You should also keep full bank and credit card statements. These statements help confirm the flow of money through the business and make it easier to check whether anything is missing, duplicated, or unclear. If you temporarily use a personal account for business activity, save the relevant statement and clearly mark the business transactions.

If you are registered for GST/HST, your records also need to support both sides of the GST/HST story: what you collected from customers and what you paid on eligible business expenses. Keep sales invoices showing GST/HST charged, expense receipts showing GST/HST paid, GST/HST filings, CRA confirmations, payment confirmations, and refund notices. Even if you are not registered yet, tracking revenue carefully helps you see when GST/HST may start to matter.

Some records explain why payments exist in the first place. These include client contracts, vendor agreements, software subscriptions, insurance policies, lease agreements, loan documents, website hosting agreements, and other recurring commitments. Keeping these records makes it easier to understand ongoing costs and support the business purpose of recurring payments.

Records that need extra care

Some records need more attention because they often mix business and personal use.

Vehicle use is one example. If you use a vehicle for business, keep a mileage log showing the date, destination, business purpose, and kilometres driven. Do not wait until year-end to estimate this from memory.
Home office costs are another example. If you work from home and may claim a business-use portion of home expenses, keep the information needed to support the calculation, such as workspace size, total home size, and the related household costs.
Owner transfers also need to be clear. For sole proprietors, this may include owner draws or personal contributions. For corporations, owner transactions need more care because payments to or from the owner may need to be treated as salary, dividends, reimbursements, shareholder loans, or capital contributions. When money moves between the owner and the business, add a note while the reason is still clear.

What to review each month

At least once a month, do a quick record-keeping check. You are not trying to perfect everything. You are making sure the basic story is still understandable.

Review income received, expenses paid, receipts saved, bank and credit card statements, unpaid invoices, GST/HST collected and paid if registered, and any owner transfers or unclear transactions. Add short notes while the transactions are still fresh.

This monthly habit is much easier than rebuilding the year later.

The minimum standard

Your records should allow someone to answer a few basic questions:

What income did the business earn?
What expenses did the business pay?
What receipts support those expenses?
What GST/HST was collected or paid?
What money moved between the business and the owner?
What still needs attention at year-end?

If your records can answer those questions, you are starting from a much stronger position.

What to do next

Start small. Create one reliable place for business records. Save your next receipt there. Save your next statement there. Add notes to anything that may be unclear later.

Do not wait until the system is perfect. Start with the next transaction.

Educational Note: This explainer is educational only. It is not legal, tax, or accounting advice. Speak with a qualified professional about your specific situation.