Months behind on your books? Here is how to catch up

Being months behind is more common than you think

If your bookkeeping has not been touched since the spring, you are not an outlier. It almost always happens the same way. A busy stretch at work, one month skipped, then another, and by the time you look up there is a box of receipts on a shelf and a bank account nobody has reconciled since March.

Nothing about that is unusual, and none of it is permanent. Books that are months behind can be rebuilt. What does change with time is the cost of the delay, so it is worth being clear about what that cost actually is.

What being late actually costs

Being behind on your books is not itself a penalty. Filing late is. The two are connected because you cannot file an accurate return from records that do not exist yet.

On income tax, the CRA late-filing penalty is 5% of the balance owing at the filing deadline, plus 1% of that balance for each full month the return is late, to a maximum of 12 months. Revenu Québec builds its late-filing penalty on Quebec returns the same way: 5% of the unpaid balance, plus 1% per full month of delay, again to a maximum of 12 months.

On GST/HST, if you file late and have net tax owing, the failure to file penalty is 1% of the net tax owing, plus 25% of that amount for each complete month the return is overdue, to a maximum of 12 months.

Two details matter more than the percentages. First, each of those penalties is calculated on an amount owing, so a return with no balance owing does not attract a late-filing penalty. Plenty of people who are behind are quietly assuming the worst about a year that may cost them nothing. Second, the penalties stop growing at 12 months, but interest does not. Arrears interest compounds daily at the prescribed rate, which is set quarterly, and it keeps running until the balance is paid. That is the real argument for starting now instead of at year end.

Step 1: Bring everything, even the shoebox

You do not have to sort anything first. Receipts, bank and credit card statements, supplier invoices, sales records, the envelope in the glovebox: all of it, in whatever state it is in. Sorting is our job, and a pile handed over in August is worth far more than an organized pile that never gets handed over at all.

The originals do not have to be paper, either. The CRA accepts scanned images of paper documents when proper imaging practices are followed, and Revenu Québec accepts records kept on paper, electronic, or computer support. A clear photo taken with your phone is a valid record.

Step 2: We sort, we enter, we catch up month by month

A catch up is not one heroic weekend. It is the same monthly work done in sequence, oldest month first, so each month closes against real bank activity instead of a guess. Documents get categorized, matched to what actually moved through the account, and posted to the right place.

Working in order is what makes the result defensible. It also surfaces the things a rushed reconstruction misses: the deduction nobody claimed, the sales tax already paid on a purchase, the duplicate charge that ran for four months.

Step 3: You start fresh, and we keep the rhythm

The catch up is the one time cost. What prevents the next one is keeping the books current from that point on, so the year end stops being an event and becomes a summary of records that were already kept as the year went.

Both the CRA and Revenu Québec require business records and supporting documents to be kept for six years from the end of the last tax year they relate to. Once you are current, that obligation takes care of itself.

Where to start in 2026

Start by counting the months, not by fixing them. Knowing you are seven months behind, and roughly what is owed, converts an open ended worry into a piece of work with a size. From there it is a schedule, and the schedule is ours to run.

Bring everything you have, in whatever state it is in. The first consultation is free, and there is no obligation.