The short version
- Rebuild the books first. Every return you owe is built from them.
- Deal with payroll deductions and sales tax before income tax: they're amounts held for someone else, and directors can be personally liable for them.
- Keep filing current returns on time while you catch up, so the backlog stops growing.
- Since October 1, 2025, the CRA's Voluntary Disclosures Program gives unprompted applications full penalty relief and 75% interest relief.
- A late return you can't pay is still worth filing: late-filing penalties grow every month a return is missing.
Why falling behind snowballs
A missed return rarely stays one missed return. Interest on unpaid tax compounds daily. Late-filing penalties add a percentage for each month a return is missing. When returns don't arrive at all, the CRA can estimate what you owe and assess it, and those estimates tend not to favour the business.
Time limits also start working against you. Input tax credits for GST paid on business expenses generally have to be claimed within four years, and a corporation's refund can only be claimed if its T2 is filed within three years after the tax year ends. Every month of waiting can turn money you're owed into money you've lost.
Step 1: Gather what exists
Before anything can be filed, pull together the raw material:
- Bank and credit card statements for every account the business used, for every month that's behind
- Sales records: invoices issued, point-of-sale reports, platform payout statements
- Supplier invoices and receipts, including anything sitting in an email inbox
- Payroll records: pay stubs, hours, and any remittance confirmations
- What the CRA already has: your filing history, balances, and notices in My Business Account, plus eTaxBC for PST
Missing receipts aren't a dead end. Bank statements show every transaction, and many suppliers can reissue invoices. The CRA does expect records to be kept for six years from the end of the tax year they relate to, so going forward, keep everything.
Step 2: Rebuild the books, one month at a time
Catch-up bookkeeping means taking each month in order: categorize every transaction, reconcile each bank and card account to its statement, and separate personal spending from business spending. For a corporation, owner withdrawals and personal expenses paid by the business belong in the shareholder loan account, not in expenses.
Reconciled books are what make the returns defensible. Figures pulled straight from bank deposits, without matching sales to invoices, tend to over-report revenue and miss credits you're entitled to.
Step 3: File in the right order
Not every overdue filing carries the same risk. A sensible order is:
- Payroll source deductions and T4 slips. Deductions withheld from employees are held in trust for the CRA, and directors can be held personally liable for unremitted amounts.
- GST/HST and PST returns. Sales tax collected from customers is also held for government, and filing returns preserves the input tax credits that offset what you owe.
- T2 corporate returns, oldest year first, since each year's closing balances become the next year's opening numbers.
- BC annual reports, to bring the company back into good standing with BC Registries.
- Owners' personal returns, which depend on the salary and dividend figures from the corporate side.
Throughout the catch-up, keep current periods filed on time. A backlog you're shrinking is a very different conversation with the CRA than one that's still growing.
The Voluntary Disclosures Program
The CRA's Voluntary Disclosures Program (VDP) exists for exactly this: taxpayers who come forward to correct errors or omissions in their filings. It was updated on October 1, 2025, and relief now depends on whether the CRA contacted you first.
| Application | Penalty relief | Interest relief |
|---|---|---|
| Unprompted: you came forward on your own | 100% | 75% |
| Prompted: after CRA communication about a possible issue | Up to 100% | 25% |
Applicants under audit or investigation, and those who were egregiously non-compliant, generally aren't eligible. Applications need supporting documents covering six years for Canadian-sourced income and four years for GST/HST, and are made on Form RC199.
The VDP isn't needed for every late return: if you simply filed late and the penalties are small, filing may be all it takes. When there's unreported income or significant penalties at stake, a CPA or tax lawyer should decide whether and how to apply before any returns go in, because relief is greatest when you come forward before the CRA contacts you.
When the VDP isn't available
If a voluntary disclosure isn't an option, the CRA's taxpayer relief provisions can still cancel or waive penalties and interest in some situations, such as circumstances beyond your control, financial hardship, or CRA error. Requests are made on Form RC4288 and can only reach back ten calendar years.
If the CRA has already written to you, respond by the date in the letter. Payment arrangements are available for balances you can't pay at once, and a demand to file shouldn't be ignored: it can lead to further penalties and, in serious cases, prosecution.
What a catch-up costs with Tallyforth
We price catch-up bookkeeping at your monthly fee for each month that needs rebuilding, up to 24 months, so the cost is known before we start. You can see yours in a few minutes with the quote calculator, and read how catch-up bookkeeping runs, month by month, from the oldest period forward.
Common questions
Should I file a return if I can't pay what I owe?
Generally, yes. Late-filing penalties are charged for each month a return is missing, while an unpaid balance can often be managed with a CRA payment arrangement. Filing stops one of the two from growing.
How far back will I need to file?
It depends on what's outstanding and why. Your CRA account shows which returns the CRA considers missing. If you're considering a voluntary disclosure, ask a CPA or tax lawyer before filing anything, because the scope of a disclosure matters.
Can I still claim GST input tax credits for old expenses?
Usually, if you're within the time limit. For most businesses, input tax credits must be claimed within about four years, so the oldest periods are the most urgent to file.
Can you deal with the CRA for me?
We rebuild the books and prepare the filings. Voluntary disclosure applications and disputes with the CRA are handled with our contracted CPA partners.