Source invoice evidence
Review the PDF to confirm whether GST/HST appears on the invoice and whether the amount is plausible against the subtotal and total.
Tax validation guide
GST/HST invoice validation before QuickBooks posting
How bookkeeping teams can review GST/HST details, tax codes, invoice totals, and approval context before posting invoices to QuickBooks Online.
First 20 invoices free. No credit card. No contract.
Short answer
GST/HST invoice validation means checking whether the source invoice supports the tax amount and tax treatment that will be posted to QuickBooks Online. Bookkeeping teams should review the PDF, vendor, subtotal, GST/HST amount, total, coding, and approval status before posting. Plaincount is not a replacement for QuickBooks Online; it is a validation and approval workflow that helps teams validate invoice details before QuickBooks creates the bill.
What GST/HST validation should cover
The goal is not generic tax automation. It is a visible bookkeeping approval step before the invoice becomes a QuickBooks transaction.
QuickBooks tax treatment
Check that the intended QBO tax code and bill line treatment match what the invoice actually shows.
Missing GST/HST
Some invoices legitimately have no GST/HST, while others are missing required tax detail. The distinction needs human review.
Approval context
If tax treatment is uncertain, the approval trail should show that a reviewer checked and cleared the invoice before posting.
Where GST/HST errors enter the workflow
OCR or extraction misses tax fields
An invoice may have GST/HST on the PDF, but the extracted invoice details may not carry it forward correctly.
The wrong tax code is selected
Even with the right amount, the QuickBooks tax code or line treatment can be wrong for the client books.
Mixed or split coding needs attention
Invoices with multiple lines may need careful coding and tax treatment before posting as a Bill or Expense.
Approval happens away from the invoice
If the decision is buried in email, the team loses the connection between tax validation and posting approval.
Pre-posting review checklist
Use this as the operational boundary before an invoice becomes a Bill or Expense in QuickBooks Online.
| Review check | Why it matters before QuickBooks |
|---|---|
| Does the PDF show GST/HST? | The source invoice is the evidence for the tax treatment that will be sent to QuickBooks Online. |
| Do subtotal, GST/HST, and total reconcile? | Mismatched invoice math should be resolved before QBO posting. |
| Is the selected tax code intentional? | Tax code choices affect the accounting record after the invoice is posted. |
| Are bill lines and expense coding aligned? | Tax validation often depends on how the invoice is coded, not just the header total. |
| Is the tax validation visible in the approval trail? | A clear audit trail helps teams explain why the invoice was posted with that treatment. |
Recommended review workflow
Plaincount keeps the control step visible before QuickBooks Online posting.
- 01
Capture source
Keep the invoice PDF available during approval.
- 02
Compare fields
Check extracted tax, subtotal, total, vendor, and invoice number details.
- 03
Validate coding
Confirm account, bill line, and tax code treatment before approval.
- 04
Approve
Record that a person cleared the invoice for posting.
- 05
Post to QBO
Create the approved transaction in QuickBooks Online.
GST/HST invoice validation FAQ
What is GST/HST invoice validation?
It is the process of checking the source invoice, tax amount, tax code, coding, and approval context before posting the invoice to QuickBooks Online.
Does Plaincount calculate tax instead of QuickBooks Online?
No. Plaincount provides a validation and approval workflow before QuickBooks Online posting. QuickBooks remains the accounting system of record for approved transactions.
Should missing GST/HST always block an invoice?
Not always. Some invoices may correctly have no GST/HST. Plaincount helps surface the issue so your team can decide before the invoice is posted.
Why connect GST/HST validation with approval?
Tax treatment is part of invoice quality. Keeping it connected to approval and audit history makes the posting decision easier to understand later.
Related Plaincount resources
Stop invoice mistakes before they reach QuickBooks.
Plaincount prepares your invoices, flags duplicates and GST/HST issues, and creates the QuickBooks bill after approval.
First 20 invoices free. No credit card. No contract.