Employers should have a duplicate of your missing P60, even if it says ‘Duplicate’ on it. However, if you go back after three years to acquire a p60 and your employer refuses to supply you with one, you can request a “Statement of Earnings.”
Even if the organization no longer employs you, they should continue to assist you. Call or send a polite email requesting a copy. Inform them that HMRC advised you to contact them (which they do on the .gov website). If they do not react, be persistent. Give it seven days, then approach HMRC for the monies if they have not been received.
It seems sensible to start with the employer because it shouldn’t cost you anything. Modern payroll software makes it simple, and HMRC encourages their assistance. However, there may be reasons why this is not an option. They’ve gone out of business. You are no longer in a relationship. You may have inquired, and they have been delayed to react, or you may have inquired, and it is a printout or photocopy.
Employers are also unlikely to have outdated stationery, so a simple printout is probable. The pay forms have a pre-printed year-end date and must be on the proper copy. We are delighted to send old paperwork to your organization if they want assistance.