49 Detectors. One Upload.
Every line of your AP ledger is tested against 49 rule-based detectors covering GST/HST, PST, QST, and provincial exemptions across all Canadian jurisdictions.
No credit card required. Results in under 60 seconds.
Core Error Types
6 detectors
HST Overpayment
Identifies instances where HST has been overpaid, such as when the wrong rate is applied or when it's charged in a province that only requires GST.
PST/QST Leakage on Manufacturing Equipment
Identifies potential refunds for PST or QST paid in error on manufacturing equipment.
Tax on Gross Calculation Error
Flags invoices where tax is incorrectly calculated on the gross amount instead of the net amount.
Place of Supply Mismatch
Flags invoices where the tax charged is based on the vendor's province instead of the customer's, resulting in incorrect tax rates.
Missing Self-Assessment
Flags invoices from foreign vendors for services where GST/HST self-assessment may be required.
Restricted ITC
Identifies transactions where claimed Input Tax Credits are restricted or disallowed by law, such as for meals, entertainment, or certain vehicle expenses.
Construction & Real Estate
10 detectors
BC Contractor Real Property Classification
Detects when PST was incorrectly charged on real property contracts in British Columbia.
SK Services to Real Property (Tax Cascading)
Identifies instances of tax cascading in Saskatchewan where contractors may have incorrectly paid and collected PST on the same project.
MB M&E Classification Error
Detects when RST was incorrectly applied to M&E systems in Manitoba based on misclassification of TPP vs Real Property.
Self-Supply FMV Overpayment
Detects when builders overpaid GST/HST on self-supply by calculating tax on the gross appraised FMV instead of backing out the embedded tax.
PBRH Rebate Underclaim
Detects when Purpose-Built Rental Housing projects may have underclaimed the enhanced 100% GST rebate available since September 2023.
FTHB Rebate Calculation Error
Detects errors in First-Time Home Buyers' GST Relief calculations.
Holdback ITC Recovery
Detects unclaimed Input Tax Credits on statutory holdback releases in construction contracts.
Double Tax Detection (BC/MB)
Identifies invoices where sales tax was paid on materials and also charged to the customer, resulting in double taxation.
SK Non-Resident Contractor Holdback
Detects when the required 6% holdback was not retained from non-resident contractors in Saskatchewan.
Quebec Attestation Compliance
Detects construction contracts in Quebec that may be missing required Attestation de Revenu Québec verification.
ITC Documentation Compliance
3 detectors
Missing GST/HST Registration Number
Detects invoices of $100 or more that are missing a valid supplier GST/HST registration number.
Tier 3 Documentation Gap
Detects invoices of $500 or more that are missing required Tier 3 documentation fields.
Factor Method Miscalculation
Identifies incorrect Input Tax Credit calculations for employee reimbursements and allowances.
Data Centre ITC
2 detectors
BC PM&E Software Development Exemption
Detects BC Production Machinery & Equipment Software Development Exemption opportunities for data centres.
Alberta Bill 12 Data Center Levy
Flags potential exposure to Alberta's Bill 12 Data Center Levy and advises on the available Corporate Income Tax credit offset.
GL Account Exceptions
1 detector
GL Account Exception
Flags invoices where tax was paid but the GL code does not match ITC receivable accounts, suggesting the ITC was not booked.
AI Data Centre ITC
7 detectors
Capital Personal Property Apportionment
Ensures ITCs on capital personal property are claimed correctly based on the primary use test for commercial activities.
Operating Expense Apportionment
Determines the recoverable ITC for non-capital operating expenses based on the exact percentage of commercial use.
Simplified Registration Vendor Trap
Flags invoices where tax was paid to a foreign digital vendor registered under a simplified framework, as this tax is non-recoverable.
Specified Person Limitation Warning
Warns when an entity qualifies as a specified person and is at risk of forfeiting ITCs due to a shorter 2-year claim window.
CARM Import Hardware Documentation
Flags imported hardware purchases to ensure the necessary CARM customs documentation is retained for GST/HST ITC claims.
Quebec LBR Phase-Out Historical Recovery
Identifies opportunities to recover QST under-claimed on specific business expenses during the 2018-2020 Large Business Restriction phase-out.
SR&ED Coordination Flag
Flags invoices for R&D equipment to ensure GST/HST ITCs are claimed independently of SR&ED Investment Tax Credits.
Audit Quality & Provincial
8 detectors
Zero-Tax Anomaly
Detects invoices where the tax amount is zero but tax was likely paid to the supplier, indicating a data entry or extraction error.
Tier 1 Documentation Gap
Flags invoices under $100 that are missing basic documentation like supplier name, date, or total amount.
Commercial Activity Eligibility
Flags expenses that may not be eligible for ITCs because they are related to exempt activities.
Tax Rate Verification
Detects invoices where the correct province was used but the tax rate applied is wrong.
PST Exemption: Goods for Resale
Recovers PST charged on goods purchased for resale in BC, SK, and MB, which are legally exempt.
PST Exemption for Packaging Materials
Identifies invoices where PST was charged on tax-exempt packaging materials in BC and SK.
PST Exemption: Farm and Fishing Equipment
Identifies invoices where PST was charged on qualifying farm and fishing equipment in BC, SK, and MB.
QST Input Tax Refund (ITR) Recovery
Identifies opportunities to recover Quebec Sales Tax that was overpaid or charged in error.
Real Estate ITC Recovery
5 detectors
Commission Rebate ITC Recovery
Detects when a brokerage or vendor issues a cash-back rebate to buyers and the recoverable tax fraction has not been claimed as an ITC.
Forfeited Deposit / Breach of Contract Warning
Flags forfeited deposits or breach-of-contract payments where tax must be remitted to the CRA.
Short-Term Rental Reclassification Trap
Flags expenses related to short-term rentals, which can reclassify a property as commercial and make future sales subject to HST.
NRRP Rebate
Detects when an investor purchasing new construction for long-term rental may be eligible for the New Residential Rental Property rebate.
Real Property Change-of-Use
Detects shifts in real property use between residential and commercial, which can trigger tax adjustments.
PropTech & Brokerage
4 detectors
Builder Self-Supply (Section 191)
Identifies transactions where a developer must self-assess and remit HST on the fair market value due to a deemed self-supply under ETA s.191.
Independent Contractor / Small Supplier Detection
Detects contractor payments lacking GST/HST when the vendor likely exceeds the $30,000 small supplier registration threshold.
Interprovincial Place-of-Supply Rate Validation
Flags invoices where the tax rate matches the vendor's province instead of the correct destination province.
P-Card / Credit Card Aggregation Detection
Flags transactions from generic credit card vendor names that lack individual supplier detail, putting ITCs at risk of CRA disallowance.
Industry Verticals
3 detectors
Mutual Fund Trailing Commission ITC Opportunity
Identifies ITC recovery opportunities for mutual fund dealers on operational expenses following recent changes to tax law.
Telecom RCM Compliance
Ensures compliance with the Reverse Charge Mechanism for wholesale telecommunication services to prevent tax fraud.
CRO/Life Sciences Zero-Rated Export Misclassification
Identifies unclaimed ITCs for Contract Research Organizations whose revenue from zero-rated clinical research exports may be misclassified as exempt.
See what your firm is missing
Upload your AP ledger and all 49 detectors run automatically. Results in under 60 seconds.