USPS says more than 91 percent of taxpayers will use electronic filing to send their federal tax returns this year, but has some tips for folks filing by mail.
- If you deposit returns in a blue collection box on tax day, double check the pick-up schedule on the label. To make sure your return gets the April 15 postmark, deposit it before the last scheduled pick up time at that box.
- Make especially sure to attach the correct postage, because the return may weigh more than an ounce. USPS says the Internal Revenue Service won't pay any postage due, and your filing will be returned if you use insufficient postage. A one ounce letter costs $0.49 and $0.21 for each additional ounce.
- Remember to include a return address on the envelope, because short-paid mail without a return address on it will be sent to the postal mail recovery office to determine the sender. That will delay its return to you.
- The Postal Service recommends getting proof of mail or prove or delivery for your tax returns. It says to use a certified mail service with a return receipt, plus applicable postage.
- Tax forms aren't available at post offices any more. Online, you can get federal forms here, Kentucky forms here, and Tennessee forms here. Illinois' tax website is here, and Missouri's is here.
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