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Common Tax‑Free Mistakes to Avoid (2026)

A short checklist to avoid surprises—especially when fees and mixed categories apply.

Most common pitfalls

Pre-shopping checklist

FAQ

What happens if I open sealed items?

Handling rules can vary. Follow store instructions to avoid issues.

How do I avoid ineligible purchases?

Confirm category, eligibility, and store policy (including fees) upfront.

Why might the calculator differ from checkout?

Categories, fees, and store policy can change the final amount.