Contact

Email us at [email protected]. We read every message and fix reported errors quickly.

For corrections to a calculator's rules or rates, please include the tool name and the official source you're referencing — it helps us update faster.

What to include in a correction

• The BorderTally page URL.
• The value or sentence that looks wrong.
• The expected value and the date it became effective, if known.
• A source link from the relevant authority, school, carrier, or tax office.

Advertising, affiliate, and privacy questions

Use the same email for advertising placement concerns, affiliate-link disclosures, privacy requests, or billing questions about BorderTally Pro. Calculator inputs for the free tools run in your browser and are not stored by BorderTally.