If you’ve discovered an error on your tax return after filing, you may need to amend it. But which form should you use – the 1040X amended return or the …
If you’re in the UK, you must submit your tax return by October 31 of the current year, and you must send it early if you want to use paper instead of electronic filing. You must submit your taxes by January 30th of the following year if you choose to e-filing.