Compliance, made calm.

Metarithmika Deadline Tracker is a free tool created by Metarithmika, a bookkeeping and accounting services firm for small business owners and non-profit organizations in Ontario. Metarithmika helps clients with the daily financial tasks that keep an organization running — bookkeeping, payroll, sales-tax filing, and overall financial oversight — with multilingual support in English, Spanish, and Greek. You can learn more about the firm at metarithmika.ca and follow along on Instagram at @metarithmika.

This tool was built to help business owners, non-profits, and charitable organizations keep track of their Canada Revenue Agency (CRA) filing deadlines and avoid the penalties and interest charges that come from missing one. When you subscribe, you tell us your type of organization and your role, and we calculate the deadlines that apply to you — T1 personal returns, T2 corporate returns, GST/HST remittances, payroll source deductions, T4 information returns, and the T3010 charity return.

A reminder lands in your inbox exactly one week before each due date, ready to add to Google Calendar or download as an .ics file, so nothing slips through the cracks. Metarithmika is not affiliated with the CRA; reminders are informational, and you should always confirm dates with official sources.