Tax Returns

How can you find out whether or not you're getting a refund, and the amount?

Log in to your Self Assessment account, it will show your liabilities and payments. If there's a small difference in your favour, you'll probably have to ask for them to pay it to you, because their default position seem to be to hang on it it and apply it to your next liability when that arises. This is not necessarily a bad thing if you don't desperately need the cash right now, since they pay interest.