Retirement Date Guides

Guides that explain the rules behind the calculators: how the maths works, what the official schedules say, and where calculators reach their limits.

The method step by step: the formula, month-end handling, and worked examples.

The complete SSA table, the attainment rule, and the 1-January twist.

What each term means, how they relate, and why "early" needs a reference point.

How central and state retirement ages work, and which states are verified.

What FR 56(a)'s proviso says, who it covers, and the born-on-the-1st exception.

The birth-year MRA table and how it combines with service years.

The official timetable, how to find your date, and what the timetable doesn't say.

What the maths gets right, where calculators reach their limits, and what to verify.

Frequently asked questions

Are the guides free?

Yes — everything on this site is free, guides included.

Do the guides give financial advice?

No. They explain dates, rules and methods. Nothing here is financial, tax or legal advice.