Here is how the SRS is computed for a retiree whose MRA is age 56 and who retires under FERS with 30 years of civilian service and an estimated age 62 Social Security benefit of $1200 a month. 1  The FERS service is divided by 40. 2  The age 62 Social Security benefit is multiplied by the fraction derived above.
The IRS allows you to combine money in a SEP IRA with money in a 401(k) plan, either by moving the SEP IRA money to the 401(k) or the 401(k) money to the SEP IRA.
Assuming the plan accepts money from other retirement plans, you can use either a rollover or a transfer to move the money from your SEP IRA to 401(k) or vice versa. To do a transfer, just tell your plan administrator where to move the money and it gets moved automatically without being paid to you.