Tax on savings interest

Because of the higher interest rates I need to pay some tax on my savings interest. My pensions are all taxed at source so I don't know how I would do a self assessment form. I understand the banks will inform HMRC of interest paid to me - how do I pay the tax due or do I wait for HMRC to get in touch with me, I would prefer to pay the lump sum rather than have my tax codes interfered with.

Hi,

Once your banks have informed HMRC of the interest received, we will send you a calculation if any tax is owed on that interest. Details on how to pay will be included with our calculation.

Thank you.