I don't think it will be a problem unless the post office has to return the taxes to you.
You can check the status of your tax return.
You will need:
- Social Security Number.
- Tax return year.
- Hilling Status.
- Exact refund amount
Please click here to enter your information Check Your Refund .
If you wish to contact the IRS, you can call toll-free at 800-829-1040
You can also Check your State Refund.