you paid and what your employers paid. You can create an account on-line. Mine is a little murkier there because I have been paying in as self-employed the last 9 years, so I will have already paid tithing on some of the employer contributions, but I could probably approximate that pretty closely if it bothered me. Interesting to note, that over the years, I have made more contributions than employers by a 5 figure sum. Must be related to the self-employment.