Customs officer reviewing an invoice with market price data
Customs value intelligence

See what an invoice should really be worth

TaxWispr automatically verifies declared product values against original purchase prices, providing customs teams with clear, reliable evidence  instantly, accurately, and with zero manual work.

Send to curacao@taxwispr.com and receive the analysis by email.

5B+products in the historical dataset
5 yearsof purchase-price history

Price coverage includes

AmazonWalmarteBay

From document to evidence

The fastest, fully automated way to verify suspicious invoices

One Report. Complete Verification. Zero Manual Work

  1. 01

    Submit the invoice

    Upload a PDF or photo, snap a picture, or simply forward a document by email. For a completely hands-free experience, integrate via webhooks and automate your entire verification process.

  2. 02

    Extract every product

    The system reads products, quantities, discounts, shipping, tax, and currency details.

  3. 03

    Compare the evidence

    Declared values are checked against current prices and the price at the purchase date, fully automated.

  4. 04

    Review the result

    See flagged differences, likely HS codes, import-duty rates, and estimated duty exposure.

The purchase date matters.

A present-day listing cannot prove what a product cost months or even years ago. TaxWispr searches historical purchase-price data from more than 5 billion products across the last five years, including major marketplaces such as Amazon, Walmart, and eBay.

Evidence shown per product

Declared invoice price$499.00
Historical price at purchase$547.99
Today’s price$589.00
The report keeps the source, relevant date, ASIN or product link, and historical range available for verification.

Alteration risk

Recognize values that may have been artificially reduced.

TaxWispr can identify unusual invoice amounts and inconsistencies that may indicate a document was reduced or altered, including with AI tools such as ChatGPT. It gives reviewers evidence to investigate

  • Invoice totals and line-item reconciliation
  • Historical and current-price comparison
  • Discount, shipping, and exchange-rate checks
  • Clear audit trail for manual review

Value review

Automated evidence check

Review
Invoice amount$132.00
Historical evidence$249.00
Current market$269.00
Declared value is materially below both historical and current comparison prices. Manual review recommended.

See it on a real invoice

Turn a document into verifiable price evidence.

Open test application