Phone or Text
587-872-0602

One blog post closer to clean books.

Each blog post from the Castle team is packed with practical tips, real-world experience, and clear answers to common bookkeeping questions. Whether you're sorting expenses or planning for tax time, you'll find guidance to help you run your business with clarity and confidence.

No fluff, no jargon—just useful content written by people who actually do the work. We’re here to make the numbers make sense.

Terms of Service

Welcome to Castle! These terms of service outline the rules and regulations for the use of our bookkeeping services.
By accessing this website and using our services, you accept these terms and conditions in full. Do not continue to use Castle services if you do not accept all of the terms and conditions stated on this page.

1. Services Provided
Castle offers professional bookkeeping services including transaction categorization, reconciliations, financial reporting, GST/HST filing, and other related services as agreed upon with the client.

2. Billing and Payments
All services provided by Castle  are billed on a recurring basis unless otherwise
agreed upon. Payments are due upon receipt of invoice. We accept payment via credit card, debit card, and electronic funds transfer.

3. Cancellation and Refund Policy
Clients may cancel services at any time by providing 30 days’ notice in writing or via email. Refunds for prepaid services will be prorated based on the remaining unused portion of the services.

4. Privacy Policy
Our privacy policy outlines how we collect, use, and protect your personal information. We do not sell or share your information with third parties without your consent, except as required by law.

5. Liability
Castle will perform all services with reasonable care and skill. However, we do not accept liability for losses resulting from acts of nature, third-party errors, or misuse of financial information or reports by the client.

6. Amendments
Castle reserves the right to amend these terms of service at any time. Amendments will be effective immediately upon posting on this website.

7. Contact Us
If you have any questions about this privacy policy or our privacy practices, please contact us at:

Castle
316 1st Ave NE
Phone: 587-872-0602
Email: info@bookwithcastle.com
Phone or Text
587-872-0602

One blog post closer to clean books.

Each blog post from the Castle team is packed with practical tips, real-world experience, and clear answers to common bookkeeping questions. Whether you're sorting expenses or planning for tax time, you'll find guidance to help you run your business with clarity and confidence.

No fluff, no jargon—just useful content written by people who actually do the work. We’re here to make the numbers make sense.
Our Blog

GST/HST Pitfalls Small Businesses Need to Avoid

October 1, 2025

Collecting and remitting GST/HST seems straightforward, but it’s one of the most common areas where small businesses get tripped up. Mistakes here can lead to penalties, interest charges, and CRA audits.

Pitfall #1: Not Registering on Time

You must register for GST/HST once your business earns $30,000 in revenue in a 12-month period. Waiting too long means you’ll owe GST/HST retroactively — and that bill can be painful.

Pitfall #2: Charging the Wrong Rate

GST/HST rates vary depending on the province of your customer. For example:

  • Alberta → 5% GST
  • Ontario → 13% HST
  • Nova Scotia → 15% HST
    If you sell across provinces, you need to know which rate applies.

Pitfall #3: Forgetting to File (Even With No Activity)

If you’re registered, you must file returns regularly — even if you had no sales that quarter. A “nil” return is still required. Missing deadlines means automatic late-filing penalties.

Pitfall #4: Mixing Up GST/HST Collected and ITCs

  • GST/HST collected = money you owe the CRA.
  • Input Tax Credits (ITCs) = GST/HST you paid on business expenses that you can claim back.
    Confusing the two leads to errors in your filings.

Pitfall #5: Using Collected GST/HST as Spending Money

The GST/HST you collect doesn’t belong to you — it belongs to the CRA. Setting it aside in a separate account avoids nasty surprises when the payment is due.

The Bottom Line

GST/HST can feel like a nuisance, but handling it properly keeps your business in good standing and avoids costly penalties. A little organization now prevents big stress later.

Pro Tip: Open a separate bank account just for sales tax. Transfer GST/HST collected into it regularly so the funds are ready when it’s time to remit.

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