Tax Day Deadline: Boston Post Office Open Until Midnight

Procrastinators: one Boston post office will allow you to mail your taxes at literally the last minute.

The Boston Fort Point Post Office will be open until midnight to accommodate last-minute filers Tuesday on Tax Day Tuesday—the deadline for sending in tax returns.

The Fort Point Post Office will be the only United States Postal Service location in the Boston area open that late. The postal service has an online locator to find your nearest post office.

The Postal Service offered the following advice to tax filers:

• Use First-Class postage and pre-addressed labels when possible. Otherwise, write clearly and legibly. Remember to include a return address.
• Affix sufficient postage. One ounce is 49 cents; every additional ounce up to 13 ounces costs an additional 21 cents per ounce.
• Double-check postage. Weigh any return that feels heavier than one ounce. Tax agencies do not accept postage due mail; tax returns bearing insufficient postage will be returned – meaning taxpayers may be penalized for filing late tax returns.
• Avoid the mad rush at the post office. Mail returns in local collection boxes, but remember to make certain that the posted pick-up time has not passed to ensure returns will have an April 15 postmark.
• For customers who send original receipts to tax agencies, registered mail is a good choice.
• Make certain bulky envelopes are securely sealed.