How long do I have to keep tax vouchers, building society statements etc for tax purposes?

[BoGrainger]

I have looked on gov.uk and can't find the exact answer! I have tax vouchers, interest statements and pay slips going back 30 years and need to de-clutter. Hope someone can help me. Tia

Thanks. These are for self-assessment and I saw something that said 22 months and another that said 3 years. I have decided to chuck everything from before 2010 which gives me the six years.

that's the answer - just in case the revenue decide to do an investigation on you.

I work on an archive box in the loft, with a folder in for each year. One in, then the oldest one out and to the shredder.

and happy shredding by the way!

That's a good idea. I really only need one box. The study is looking awfully bare already!