Two calculators. No sign-up.

Both are built for the border, where most tools stop. Each does arithmetic on what you enter and names the rule behind every line. Nothing you type leaves your browser.

Rules checked
Next check
February 2027
Last change
None since first publication

Day counter

Where do your days put you under the US substantial presence test and Canada's 183-day rule? Optional checks for Ontario health coverage and US registration.

120, 90 and 60 days in the US over three years

120 + 30 + 10 = 160 of 183 weighted days

Not caught by the US test. Example values.

Open the day counter

The TFSA in the US

What a Canadian TFSA costs a person who is, or becomes, a US person. And what the US withholds on US dividends held in a TFSA.

A TFSA of 50,000 held for 5 years as a US person

12,331 tax plus filing

4,831 in tax and 7,500 in trust-form filing fees. Example values and assumptions.

Open the TFSA tool

Information, not advice. Each tool says what it does not cover. Report a mistake on this page.