The FIN-400 provincial sales tax return is the form every PST-registered British Columbia business uses to report the tax it charged customers, self-assess PST on its own taxable purchases, and remit the balance to the Ministry of Finance. You work through eleven boxes (A through K) in five steps, subtract any commission and adjustments, and file by the last day of the month after your reporting period ends.
When the Return Is Due
The Ministry assigns your reporting frequency based on how much PST you collect in a year:
- More than $12,000: monthly only
- More than $6,000 up to $12,000: monthly or quarterly
- More than $3,000 up to $6,000: quarterly or semi-annual
- $3,000 or less: quarterly, semi-annual, or annual
Your frequency stays fixed unless the Ministry sends a notice changing it.1Province of British Columbia. Reporting and Paying PST Whatever your frequency, the deadline is the last day of the month after your reporting period. A January monthly return is due by the last day of February. For paper returns, the postmark counts as the filing date.2Government of British Columbia. Guide to Completing the Provincial Sales Tax (PST) Return
If you had no taxable activity, you still file. The form itself states: “NO PST Collectable in this Period? You Must Still File a ‘NIL’ Return.”3Government of British Columbia. FIN-400 Provincial Sales Tax Return
Filling In the Boxes
Enter all amounts in Canadian dollars. If a sale settled in another currency, convert it using the Bank of Canada daily exchange rate for the date PST was paid or became payable.2Government of British Columbia. Guide to Completing the Provincial Sales Tax (PST) Return
Step 1: Total Sales (Box A)
Box A is the total value of all your sales and leases in Canada during the period, excluding PST and GST. Include every transaction: taxable, non-taxable, and exempt. This shows the Ministry your overall volume, not just the taxed slice.
Step 2: PST Collected and Commission (Boxes B, C, D)
Box B is the total PST you charged on taxable sales and leases. Report and remit every dollar you charged, even if the customer hasn’t paid the invoice yet. If you sell energy products, add the 0.4% Innovative Clean Energy Fund levy. If you lease passenger vehicles, add the $1.50-per-day Passenger Vehicle Rental Tax.2Government of British Columbia. Guide to Completing the Provincial Sales Tax (PST) Return
Box C is your commission, calculated using the formula printed on the return worksheet. The maximum is $198 per reporting period, and you only qualify if you file and pay in full by the due date.1Province of British Columbia. Reporting and Paying PST
Box D is Box B minus Box C: the net PST on your sales and leases.
Step 3: Tax on Your Own Purchases (Boxes E, F, G)
Box E is the cost of taxable goods, software, or services you bought or leased for business or personal use without paying PST at the time. Box F is the PST due on that amount. Box G is Box D plus Box F, the total you owe before adjustments.2Government of British Columbia. Guide to Completing the Provincial Sales Tax (PST) Return
Step 4: Adjustments (Boxes H, I, J)
Box H is a bad-debt adjustment for PST you already remitted on sales that later went uncollectable. The formula is: PST remitted × (amount unpaid ÷ total amount payable). Claim it in the same reporting period you write off the debt. Miss that window and you’ll have to apply for a refund instead.2Government of British Columbia. Guide to Completing the Provincial Sales Tax (PST) Return
Box I covers PST you refunded or credited to customers after remitting it, typically because of a billing error. Again, claim it in the same reporting period you gave the refund. Box J is H plus I.
Step 5: Amount Due (Box K)
Box K is Box G minus Box J. That’s what you pay.
When You Owe PST on Your Own Purchases
The self-assessment boxes (E and F) catch businesses that assume PST only applies to what they charge customers. You owe PST on your own taxable purchases whenever the seller didn’t charge it. Common situations:
- Goods bought from suppliers outside B.C. who didn’t charge PST. Self-assess on the total cost including transportation, customs, and excise charges, but not GST or federal luxury tax.
- Taxable goods pulled from your resale inventory for your own use, donations, promotional giveaways, samples, gifts, or prizes.
- Purchases where the supplier should have charged PST on a taxable good or service and didn’t.
- Goods originally acquired for lease that you or an employee end up using.
PST also applies to certain services bought for business use, including services performed on taxable goods, legal services, online marketplace services, and telecommunications.4Government of British Columbia. Small Business Guide to PST
Submitting and Paying
eTaxBC is the Ministry’s online portal. You enter your figures, work through the on-screen validation, and get a confirmation number when the return is accepted. Payment goes through the same portal.5Province of British Columbia. Report and Pay PST Using eTaxBC
For paper, the Ministry mails a blank return before each reporting period. If it doesn’t arrive in time, download and print the FIN-400 from the government website. Mail the completed return to the Ministry of Finance, or file and pay in person at a participating financial institution. Once your business reaches $1.5 million or more in total annual Canadian sales or leases, electronic filing and payment become mandatory.5Province of British Columbia. Report and Pay PST Using eTaxBC
Keep copies of every filed return and payment confirmation for at least five years. Records older than that can be destroyed at your discretion unless an appeal is outstanding; destroying anything earlier requires written permission from the Ministry.4Government of British Columbia. Small Business Guide to PST
Fixing a Return After You File
If you find an error on a return you already submitted, file an amended return. On paper, check the “Amended” box on the remittance form and enter the corrected figures. In eTaxBC, follow the portal’s instructions for filing a return on the same reporting period.2Government of British Columbia. Guide to Completing the Provincial Sales Tax (PST) Return
For customer refunds or credits given after remittance, use Box I on your next return, but only if you claim it in the same reporting period you issued the refund. Otherwise, file a separate refund application on form FIN-355. The Ministry must receive refund applications within four years of the date the tax was paid, and refunds under $10 are not issued.6Government of British Columbia. Instructions for Completing the Application for Refund – General
What Late Filing Costs
File late while owing money and the penalty is 5% of the unpaid amount plus 1% for each complete month you’re late, up to 12 months. On $5,000 filed three months late, that’s $250 plus $150, for $400.7Government of British Columbia. CTB 005 Penalties and Interest
Repeat late filers face 10% plus 2% per month for up to 20 months once the Ministry has warned them. A separate 10% penalty applies to assessed amounts when you repeat the same error, such as failing to charge PST on a taxable item, after being previously advised of it.7Government of British Columbia. CTB 005 Penalties and Interest
Interest compounds monthly on any overdue balance. If the Ministry issues a Notice of Assessment, paying in full within 30 days of the notice date stops additional interest.