Been paid twice this month by error

[babylone]

I have changed jobs at the end of january.
i moved from one NHS trust to another different one.
i received my pay from my current workplace two days ago.
this morning i received exactly the same pay from my previous job!

a part of me wants to let them know they’ve made a mistake and return my (small) salary (AINBU)
another part of me think that perhaps no-one will notice and perhaps i could keep it???? (AIBU)

im thinking if they dont notice this month, they will notice next month and at some pount i will have to return it anyway….

If both trust paid you for the same pay period using your allocated tax code you will not have paid enough income tax as it will be classed as two jobs and one should have been taxed at BR. It might be wise to check with HMRC after the new financial year commences.