Line-item math
Compare printed quantities × unit prices with line amounts, then line-item sums with the subtotal.
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Free Invoice Checker
Check an invoice before you pay. Upload a PDF or image to review printed calculations, dates, supplier details, and formatting inconsistencies.
Flags potential inconsistencies for review. A scan does not guarantee authenticity.
Drop an invoice here to review
Drag and drop or click to select · PDF, JPG, or PNG · Max 10MB
Up to 10MB. Upload only documents you are authorized to share. Service providers process your file for this scan. Privacy details.
What the invoice checker checks
Totals and discounts
Reconcile the subtotal, printed tax, fees, and discounts with the invoice total. This does not validate tax rates.
Invoice details and dates
Look for supplier and customer names, an invoice number, a date, a total, and due dates that precede the invoice date.
Visible editing signals
Review mismatched fonts, pasted-looking regions, placeholders, and available PDF export properties.
For example, 3 items at 40.00 should produce a line amount of 120.00. With 12.00 in printed tax and a 5.00 discount, the total should be 127.00. A different total needs clarification; it does not prove fraud.
Before paying an unfamiliar invoice
Confirm the supplier and any changed payment instructions using contact details you already trust. Compare the invoice number with your own records for duplicates and match the charge to the agreed work or purchase order. This single-file checker cannot confirm bank account ownership or search your payment history.
Unreadable or missing values reduce what can be checked. An arithmetic discrepancy may come from a transcription error or missing page; compare the explanation with the original.
Frequently asked questions
Can this detect a fake invoice?
It flags calculation errors, missing details, impossible dates, and visible inconsistencies. It cannot authenticate the supplier, confirm delivery, or guarantee that an invoice is genuine.
Does it detect duplicate invoices or changed bank details?
It reviews one uploaded file. It cannot compare invoice numbers against your accounts or identify a bank account change without a trusted prior record. Check both separately before paying.
Does it verify VAT or sales tax compliance?
No. It checks arithmetic using the printed amounts. It does not determine tax rates, registration status, or legal invoice requirements.
What should I upload?
Upload a complete invoice as a PDF, JPG, or PNG up to 10MB. Include all pages and avoid cropping totals. Credit notes, quotes, and receipts should be reviewed separately.