HST/GST posts
Registration, ITCs, filing frequency, and CRA traps. 10 posts.
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File HST Through CRA My Business Account: The Return Lines That Trip Owners Up
Logging into CRA is easy. The return logic isn't. Here's which lines owners get wrong, where line 108 usually drifts, and what to check before you hit submit.
GST/HST Mistakes That Turn Into CRA Penalties: From Late Filing to Personal Liability
Small HST mistakes stop being small the moment the amount should have been collected, remitted, or supported. Here's the order they get expensive — from filing hiccups to director liability.
GST/HST Registration in Canada: The $30,000 Rule That Gets Expensive Fast
Crossing $30,000 is the easy part. The 29-day registration window is the trap — miss it and you can owe GST/HST you never charged the customer. Here's how to catch it before CRA does.
HST Filing Deadlines 2026 Ontario
Ontario guide to 2026 HST deadlines for Canadian businesses: monthly, quarterly, annual, instalment, payment, and late-filing dates in one place.
HST Filing Frequency in Canada: Why Annual Isn't Always the Smart Choice
Annual is easier but slower. Quarterly is faster but more work. Here's how we decide for GTA clients — when one return a year wins, and when to switch to four.
HST on Food and Beverages in Ontario: Why One Item Is Taxable and the Next One Isn't
A single bagel at a café is taxable. Six bagels at a grocery store aren't. A 250 mL ice cream cup is taxable; a 1.5 L tub isn't. Here's the SKU-level rulebook Ontario food sellers actually need.
HST for Freelancers in Canada: When Your Invoice Actually Needs Tax
One freelancer, three clients — Ontario, Manitoba, US. Three different tax answers on one invoice template. Here's the place-of-supply rule most freelancers guess wrong.
Input Tax Credits in Canada: How Small Receipt Mistakes Become Denied Claims
ITCs look easy until a missing supplier number, a mixed-use expense, or a late claim turns a real business cost into a denied credit. Here's the rule — and the receipts that actually protect you.
Quick Method for HST in Canada: When It Actually Saves You Money
The Quick Method is a profit for some businesses and a bad election for others. Here's the decision list, the Ontario rate, and which businesses it helps — and which ones it hurts.
The $30,000 Small Supplier Threshold in Canada: The Rolling-Quarter Trap Most Owners Miss
Crossing $30,000 isn't the real trap — being close is. CRA checks a rolling four-quarter window, and the associated-persons rule combines side businesses together. Here's the math most owners miss.