The Retirement Brief

William Harrison's retirement-planning letter for the people Sirmium Capital serves. One decision per edition for FDNY, NYPD, veterans, and federal retirees, in plain English, grounded in the actual rules.

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Quick Answer

What is The Retirement Brief?

It is Sirmium Capital's retirement-planning letter series, written by our Chief Investment Officer, William Harrison. Each edition takes one decision that New York's first responders, veterans, and federal retirees actually face, a pension worry, a rollover you cannot undo, the tax map of your paycheck, and lays out the rules in plain English. Past editions are free to download below, and you can subscribe to get each new one. This is educational planning information, not personalized investment, legal, or tax advice.

The Letter

Planning written for the career you served

Built for one career at a time

Each edition speaks to a specific service: NYPD and FDNY pensions, first-responder and veteran rollovers, the veteran and federal tax map. Real rules, not general tips.

Grounded in the actual rules

Every claim traces back to the constitution, statute, or IRS guidance behind it, with the sources listed. Written to be read once and trusted.

Free, and no email to read

Past editions download free as PDFs. Subscribe if you want each new one by email. No spam, unsubscribe anytime.

William Harrison, Founder and Chief Investment Officer of Sirmium Capital

Written By

William Harrison

Founder & Chief Investment Officer

William leads Sirmium Capital's investment and planning process. He writes every edition of The Retirement Brief himself, so what you read is the same thinking that guides how the firm advises the families it serves, not a marketing summary of it.

The approach is simple: take one decision a first responder, veteran, or federal retiree actually faces, and lay out the rules clearly enough to act on.

The Editions

Read past editions, free

For NYPD & FDNY

Is Your Pension Actually Safe?

Whether a budget shortfall can reach your earned pension, why Article V, Section 7 of the New York State Constitution makes it a contract that cannot be diminished, and why every reform arrives as a new tier for future hires. Keeps the pension, the VSF, and COLA straight as three separate promises.

Read (PDF)

For First Responders & Veterans

The Retirement Move You Can't Undo

The one-way door in your 457 or Thrift Savings Plan. Once you separate, those dollars can often be reached before 59 and a half without the early-withdrawal penalty, and rolling them into an IRA can quietly give that access away. How to read the sign before you sign.

Read (PDF)

For Veterans & Federal Retirees

The Tax Map of Your Paycheck

Your retirement paycheck arrives in pieces, and each follows its own rule. Sort VA compensation, military retired pay, TSP, FERS, and Social Security into tax-free, taxable, and partly taxable, see where your state sits, and understand why the order you draw matters as much as the rates.

Read (PDF)

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Sirmium Capital LLC is a registered investment adviser. Educational purposes only, not individualized investment, legal, or tax advice. Pension and tax rules are subject to change; confirm the specifics with your Fund, plan administrator, or a qualified professional.

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Questions

About The Retirement Brief

William Harrison, Sirmium Capital's Founder and Chief Investment Officer, writes every edition. It reflects his own research into the rules that govern first responders', veterans', and federal retirees' retirement decisions.
Each edition is written for a specific group: NYPD and FDNY on the pension edition, first responders and veterans on the rollover edition, and veterans and federal retirees on the tax edition. If you serve or served in one of those roles, it is written for you.
Every published edition is on this page, free to download as a PDF. New editions are added over time, and subscribers get each one by email as it is released.
No. The Retirement Brief is educational information only. It does not constitute personalized investment, legal, or tax advice, a solicitation, or an offer to buy or sell any security. Pension and tax rules change and your situation is specific, so confirm the details with your Fund, plan administrator, or a qualified professional.
Yes. Past editions are free to download and the letter is free to subscribe to. Sirmium Capital provides it as a service to the communities we serve. There is no charge, and you can unsubscribe at any time.

Sirmium Research

Two letters, one research desk

Sirmium Capital publishes two letters, both written by William Harrison. Inside the Portfolio is our Chief Investment Officer's quarterly letter on markets and the portfolio. The Retirement Brief is its planning companion, focused on the specific retirement decisions that first responders, veterans, and federal retirees face. Both are free to read.

Quarterly Letter

Inside the Portfolio

Markets, portfolio strategy, and one researched idea a quarter.
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FDNY Pension Calculator

See your own numbers, with the 2026 rules built in.
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NYPD Pension Calculator

See your own numbers, with the 2026 rules built in.
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Veterans Retirement Calculator

Lay the pension, VA, TSP, and state pieces side by side.

Questions about your retirement?

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Book a free 15-minute call to bring your numbers and ask about an edition, the rules, or your own situation. Straight answers, no follow-up pressure.

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