How much should I set aside for GST/HST?

The tax you collect was never your money. This works out what share of every deposit to move out of reach, so it is still there when the return is due.

This gives you a rule of thumb for how much of the tax you collect to hold back. It is not your GST/HST return and it will not match it to the dollar.

How do you work out what to remit?

I claim the tax I paid on expenses against the tax I collectedI remit a flat percentage of my sales insteadI am not sure

GST/HST rates as at September 2026. Rates change, so check the current rate before relying on this for a filing.