What are the penalties for filing a T2 late?

The base late-filing penalty

If a corporation owes tax and files its T2 return after the deadline, the CRA charges a penalty equal to 5% of the unpaid tax, plus an additional 1% of that balance for every complete month the return remains outstanding, up to a maximum of 12 months. On a corporation owing $20,000 in tax, for example, filing a full year late means a penalty in the range of $4,400, on top of the tax itself, which makes even a modestly overdue return an expensive way to buy a few extra months. This penalty applies per return, so a corporation with several years outstanding faces the calculation separately for each one, not a single blended penalty across all of them.

The repeat late-filer penalty

The penalty doubles for a corporation the CRA considers a repeat late filer: one that was late-filed in any of the three preceding tax years and was formally demanded, in writing, to file the current return. In that situation the penalty becomes 10% of the unpaid tax, plus 2% per month for up to 20 months, roughly twice the cost of the first-time penalty. This is one of the clearer reasons a single late return can turn into a recurring, escalating problem rather than a one-time inconvenience: once a corporation has been late-filed and demanded once, every subsequent late year carries the doubled rate until a clean multi-year filing history is rebuilt, not just the year in which the demand was actually issued.

Interest keeps compounding regardless of the penalty

Separately from the penalty, interest accrues on any unpaid tax balance at the CRA’s prescribed interest rate plus 4 percentage points, compounded daily from the original balance-due day. Interest also applies to the penalty amount itself once it is assessed, so the total cost of a late, unpaid T2 grows every day it remains outstanding, not just at the point the return is eventually filed. A corporation that files a year late but does not pay the balance owing for several more months after that is still accumulating interest during that entire gap, independent of whatever penalty was already locked in at the filing date.

What happens with a nil-tax late return

Because the late-filing penalty is calculated as a percentage of unpaid tax, a corporation with no tax owing generally faces no late-filing penalty under this specific rule, even if the T2 itself is filed well past the deadline. That does not make a nil-tax late filing consequence-free: certain schedules and information filed alongside a T2 carry their own separate penalties, sometimes calculated per day up to a set maximum, so we treat every return as due on time regardless of whether tax is expected to be owing. Filing late can also cost a corporation its quarterly instalment eligibility, since that status depends on a clean compliance history.

Taxpayer relief is available, but not guaranteed

The CRA can waive or cancel penalties and interest under its taxpayer relief provisions when circumstances beyond a corporation’s control caused the late filing, such as a serious illness, a natural disaster, or an extended CRA processing delay that was not the taxpayer’s fault. A relief request is made in writing, generally using form RC4288, with an explanation and supporting documentation; it is a discretionary review, not an automatic reduction, so a request built around genuine facts and clear documentation has a meaningfully better chance of succeeding. Relief requests generally need to be filed within a set number of years of the tax year in question, so a corporation sitting on old, unfiled returns should not assume relief will still be available by the time it finally gets around to catching up.

Beyond the penalty and interest on the specific late return, a corporation that had been paying quarterly instalments as an eligible small CCPC can lose that status once its compliance history is no longer clean, pushing it back to monthly instalments going forward. This shift is easy to overlook in the moment a return is filed late, but it changes cash flow planning for every subsequent year until a new, clean compliance history is re-established.

If more than one T2 is outstanding, filing the most recent or easiest return first is rarely the right approach; the penalty and interest calculations run independently on each outstanding year, and getting current typically means working through the oldest unfiled year first, since later years often depend on schedules and balances carried forward from it. Corporations significantly behind on multiple years sometimes also need to consider the CRA’s voluntary disclosures program if the delinquency involves more than simple lateness, such as unreported income alongside the missing returns. Getting current on multiple outstanding years is also the point at which many corporations discover a refund owing to them from an earlier year that offsets some of the balance owing on a later one, which is another reason to work through the returns methodically rather than only filing the years where tax is clearly owed.

How we handle this

We track every client’s T2 deadline well ahead of time specifically to avoid this penalty structure altogether, and where a return has already gone late, we assess whether the facts support a taxpayer relief request before simply accepting the assessed penalty. This runs alongside our corporate tax services and our broader CFO and compliance support for incorporated businesses.