Approximately five years ago, my supervisor retired. Mark had two daughters, one still in college. He was worried that if he took on a second job as a contractor, his Social Security supplement would be drawn back.

What Mark didn’t know is that he was sitting in the perfect window, between age 50 and 56½, when he could have accepted that contractor job. He had no idea that window existed. He could have had both.

Mark left somewhere between $80,000 and $120,000 on the table over the window the law actually gave him. This is the conversation nobody sat him down and had: the earnings test, the exemption that flies under the radar, and the math of when it actually starts to bite.

If you’ve seen that briefing happen (“don’t take the contractor job, you’ll lose the supplement”), you’ll recognize exactly what I mean. Whoever delivered it got it wrong.

When I figured this out, I was amazed. I found out through another retiree. I had received bad information. I didn’t realize the MRA exemption existed. I’d been planning around the wrong rule until that point..

It’s also called the FERS Annuity Supplement, or the Special Retirement Supplement. It’s a bridge payment, designed to approximate Social Security, paid before you can collect Social Security. It’s paid monthly on top of your FERS annuity.

For 6(c) retirees, it starts the month after retirement. It ends the month you turn 62, because Social Security takes over at that point. Whether you actually claim Social Security at 62 is a separate decision.

The formula is simple: years of FERS civilian service ÷ 40 × estimated Social Security benefit at 62.

For a typical 1811-series career with 25 years of FERS service, that’s roughly $1,200 to $1,800 a month. Real money.

Bought-back military time does not count toward this. Only FERS civilian years are creditable for the supplement. It is, again, a bridge. It exists because the people who wrote 6C knew you’d be retiring before Social Security even talks to you.

Why does it matter? For most 6C retirees walking out at 50 with 20 to 25 years, that’s somewhere between $15,000 and $20,000 a year, every year until you hit 62.

I’ve estimated my own supplement, and it comes out to roughly $1,700 to $1,800 a month. Maybe a little more. That’s a nice mortgage payment. I got it wrong initially because I spoke to the wrong individuals. After speaking to the right one, I felt better, and finally understood it.

Let’s walk through the mechanics. The earnings test mirrors the Social Security earnings test. Same threshold, same math.

The 2026 annual exempt amount is $24,480. The reduction is $1 of supplement lost for every $2 earned over that threshold. Earn enough, and your supplement zeros out completely.

OPM handles this through an annual earnings survey. You fill it out, and OPM adjusts you the next year. What this means in practice: the offset shows up a year late. People get reduced in 2027 for what they earned in 2026.

That’s more than the supplement for most people. Zero. Wiped out.

You don’t feel it the year you earn it. You feel it the year after, when OPM catches up.

People hear “earnings test” and assume any income kills it. That’s wrong. Pension income, TSP withdrawals, rental income, dividends. None of that counts. We’ll come back to that.

All of which sounds like the supplement is dead the second you take a contractor job. If you stop reading here, you’ll plan around the wrong rule. The next section is the part nobody briefs you on.

Before we get there: I have a relative who’s also a retired federal firefighter. He took a contracting job as an instructor. He thought the supplement was just automatic, that you take any contracting job and the supplement is there. That was the lesson I learned from listening to him. Relatable foil. He earned over the threshold, reported it, and the following year he was almost reduced to zero. He was shocked.

Special category employees retiring under 6C (1811s, criminal investigators, federal firefighters, air traffic controllers, CBP officers, federal air marshals, ICE, and FBI agents) get the retirement and get the supplement at retirement. No waiting until MRA.

Here’s the part that flips the planning math:

The earnings test does not apply to 6C retirees until they reach their MRA: Minimum Retirement Age.

MRA depends on your birth year. For most readers, it’s 56 or 57.

If you walk out at 50, you have a window of roughly 6 to 7 years where you can earn unlimited W-2 or self-employment income and keep every dollar of the supplement.

At MRA, the earnings test kicks in. From that point forward, same rules as everyone else.

This is statutory. It’s codified in the law that built the special retirement supplement for special category employees. It’s not an HR favor. It’s not a discretionary thing. It’s the rule.

Plain English: if you retire at 50, the earnings test doesn’t apply to you at 51, 52, or 53. It applies the year you hit your minimum retirement age, which is 56 or 57 for most agents reading this, or any 6C special retiree.

Seven years where contractor income, consulting income, second-career W-2 wages. None of it offsets your supplement. That’s a meaningful chunk of second-act earning power.

Your retirement isn’t one phase. It’s two. Pre-MRA, you’re free to earn. Post-MRA, you have a different decision tree.

From my experiences with my relative and my supervisor, I see two sides of the same coin. One didn’t know the window existed. The other didn’t know the MRA crossing existed. Both were confused about the income they could and couldn’t earn.

If you’ve retired and you’re thinking about walking away from a contractor job, and you’re 56 or 57 or younger, take note of this. You’re missing out on a free opportunity to earn extra income.

I’ve already mapped it out for myself. When I retire, I can work as a contractor or my own consultant for at least six years, earning whatever income I want. Then at 57, I know I’ll have to report, and it’ll be clawed back the following year. Use the power of economics, timing, and the rules for your benefit.

A federal agent retires at 50. Twenty-five years of service. Estimated supplement: $1,500/month, or $18,000/year. He takes a contractor role at $145,000/year W-2 his first full year out.

He’s pre-MRA. The earnings test does not apply. He keeps every dollar of the $18,000 supplement.

Total income that year: $145,000 contractor + $18,000 supplement + FERS annuity + any TSP draws.

That same job, three years later, would have wiped the supplement out. Today, it’s free.

Same retiree, now 56, hits MRA. Still pulling $145,000/year in the same role.

The earnings test now applies. Threshold: $24,480. Earnings: $145,000. He’s $120,520 over.

$120,520 ÷ 2 = $60,260 reduction. Annual supplement is $18,000. The reduction is bigger than the supplement. Supplement zeroes out.

He keeps the $145,000 contractor income. He didn’t lose money. He just stopped getting a bridge he no longer needed. But if he didn’t see this coming, the line on his pay stub at 57 was going to surprise him.

Different retiree. Age 56, at MRA. Twenty-two years of FERS service. Estimated supplement $1,300/month, or about $15,000/year. He wants to keep most of it.

He picks up a part-time job that needs his clearance: consulting. Targets $23,000/year, just under the exempt amount.

Earnings test reduction: zero. He keeps the full $15,000 supplement. Total earned plus bridge income: $38,000 a year. No offset.

The exempt amount isn’t a wall. It’s a line you can play against. People who treat it like a wall miss the version of retirement where the math actually clicks.

Three retirees, same rule, different answer.

Most planning errors come from misclassifying income.

What counts (will reduce your supplement once the test kicks in):

What doesn’t count:

The test cares about earned income. What you trade your hours for. Not money your money makes.

Self-employment caveat: it’s net, not gross. Which means your business expenses matter to your earnings test number. Talk to your CPA.

Rental nuance: rental income is generally passive. It doesn’t count. If you file as a real estate professional, that’s a different conversation, and a different CPA conversation.

This is the read of the rules. Your situation may have edges. The earnings test is the kind of thing where one phone call to a fee-only CPA saves six-figure mistakes.

I had a peer who recently retired and was nervous all of his passive income would have to be reported. He got the wrong information from HR. I told him with confidence it didn’t, and showed him exactly where the language lives and where the rules are. He read it himself, he understood, and he was even more eager to retire, because he could keep all his income, since it didn’t bump up against the earnings test.

Pre-MRA and post-MRA are different tax and earning worlds. Build two columns in your plan, year by year. Note the year MRA hits.

The briefer is right about the test, but wrong about when it applies to you. Confirm your MRA. Confirm your retirement is under 6C. Read the exemption rule yourself. If you’re being told to walk away from a $140,000/year contractor offer because of the supplement, get a second opinion, read the rule, or talk to someone who’s already passed through this.

Six years into a comfortable contractor groove, then your check shrinks. Put your MRA on the calendar. Pre-decide whether the contractor income still earns its keep when the offset starts. Mistake 3 is the late-50s version of an interest clock, quietly running until one day, the math is different.

You don’t have to be brilliant about this. You have to know two things: when your MRA hits, and what your earnings will be that year.

I’ve watched plenty of peers make one of these three mistakes. They always find out the hard way. Which is why you don’t have to find out in the same manner.

Pre-MRA: contractor income is yours. Don’t let bad briefings cost you a six-figure year.

Post-MRA: pre-decide whether the work still earns its keep.

The supplement isn’t life-changing money. The years you keep it cleanly are.

Coming up next week:

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Signing off.

LR

This is not financial advice. Not legal advice. Not affiliated with any federal agency. Just one federal agent's honest read on the decisions we all have to make.