Product support

Start with evidence, not a vague ticket.

Include the page, calculation reference and exact issue when relevant. Never send passwords, card data, customs-system credentials, private keys, exploit payloads or confidential shipment documents.

Product guidance

Learn how saved-product prefill, comparison, CSV export and data rights work.

Open the help center

Tariff-data issue

Use the correction workflow for a rate, source, code or calculation concern that needs an audit trail.

Report a correction

Security report

Report a suspected vulnerability through the Security category or the published contact address. Do not include live secrets, destructive payloads or customer data. No bounty or response-time commitment is implied by this reporting channel.

Security reporting guidance

Direct contact

When online intake is closed, email the published support address without sensitive credentials or payment data.

support@tariffcalc.com

Secure first-party intake

Support request

Online support intake is closed in the supplied release.

Release 1.0 acceptance must pass before this data-collection gate can be enabled.

Email support