Nadia Petrov Customer Education Lead at 4OVER4.COM
Nadia is our customer education voice, built from the knowledge of our production team, with over 20 years in printing.
Question
What happens if my postcard is slightly oversized?
Answer
If your card creeps past the postcard-rate maximum, USPS reclassifies it as a letter and you pay the higher letter rate. Push the size much further and it can become a flat, which costs even more. Always measure the finished, trimmed card before buying postage.
| Classification | Trigger | Stamp |
|---|---|---|
| Postcard | Up to 4.25 x 6 in | $0.56 |
| Letter | Slightly over the postcard limit | $0.73 |
| Flat | Beyond 6.125 x 11.5 in | Higher than a letter |
A small trim mistake can quietly move an entire mailing into the more expensive tier, so verify before you print at scale.
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