Question: how long does it take to get a utr number from hmrc?
Answer: You'll get a letter containing your Unique Taxpayer Reference ( UTR ) within 10 working days (21 if you're abroad). You need your UTR to send a return. If you've sent a Self Assessment tax return before, you'll already have a UTR . If you do not know it, you can wait for the letter or find your UTR .