You may be asked for your bank or building society details during the PIP claim process so the Department for Work and Pensions (DWP) can pay you if your claim is successful. Not having an account should not necessarily prevent you from starting a claim, but you should explain this to the DWP as soon as possible. They can discuss available payment arrangements and what information they need instead. Only provide your details through an official DWP channel or GOV.UK, and check the current guidance before applying.