
Founder & CEO
Owen Monagan
I build Realize, which turns prediction-market trading history into tax figures you can trace back to the trade behind them.
I am not a CPA. I am studying for the IRS Enrolled Agent exam. I would rather you know that before you read anything else here.
Why I write about this
I trade these contracts. At some point I looked at a year of my own positions and thought: what on earth do I do about taxes on this? There was no good answer. The exports are raw, the treatment is unfamiliar, and the advice that exists was written for people trading something else.
Then I asked around, and it turned out not to be my problem. Across hundreds of conversations with sports bettors and traders, the same gap came up every time: people were quietly losing money at tax time, and most of them assumed a loss was just a loss. Often it is worth something. That is the whole reason Realize exists.
What I have built before this
I have spent years building consumer-finance and responsible-gaming products for sports bettors and traders, at Layup, always with the same goal: helping people who bet hold on to more of their own money. A prize-linked savings product. A product to offset the financial impact of betting. Realize is the same idea pointed at the one moment where the money is largest and least understood. I spoke on the technology track at SBC Summit Americas in 2026.
Layup’s banking partner is NBKC, a federally insured bank that also provides Acorns’ checking accounts. That earns a line here for one reason: a regulated bank runs real diligence before it puts its name beside yours, so it is a judgement made about us from outside the company.
We have publicly announced $2.3 million in funding, from investors including Chicago Ventures and Continental Investment Partners, and personally from the founders of Discover and Aeropay. I hold a B.A. Moderatorship in Computer Science and Business from Trinity College Dublin.
How these guides get written
Over the years we have spent more than $100,000 on legal research at the intersection of consumer finance and sports betting, including formal opinions from Orrick on the prize-linked savings products we built. That was not tax law, and I am not going to pretend it was.
What sits behind the guides is more ordinary, and more useful to tell you about. I have sat in the rooms where the case for and against these markets is actually made, at gaming law and regulation conferences including the IAGA Gaming Summit and the NCLGS summer meeting, and heard both sides put by the people making them rather than summarised secondhand. Then I took the tax question to lawyers and CPAs who work in this area and asked what it means. That, plus the primary sources, read carefully and cited on the page, is the whole basis.
Where the treatment of these contracts is genuinely unsettled, every guide says so rather than picking the answer that sells better.
How the guides separate settled from unsettled
Unsettled is not the same as unknowable. There is a statute, there is case law, there is a regulatory record, and there are people who do this for a living, and the guides read them rather than stopping at “consult a professional”.
A concrete example. Whether a prediction-market contract is the same thing as a sports bet, and whether either is gambling for tax purposes, are separate questions with separate answers, and the federal and state positions are currently moving apart rather than together. A niche this fast-moving is hard for a general practice to track, which is the reason this site exists, and the reason we hand you something to take to your accountant rather than asking you to take our word for it.
So the guides keep the two apart on the page. Where something is settled, they say what the law is. Where it is not, they say there is no IRS guidance, describe how each filing route works, and show what each produces for the same year.
What I own at Realize
The tax engine and the spec it is written against. Every figure the product shows comes out of it, and I would rather that be one named person’s responsibility than a company’s.
The hard part is the year-end mark. Section 1256 treats every open position as though you sold it on the last business day of the year, so a filing needs the market value of each position on December 31, not only the trades you closed. That number is in nobody’s export, and rebuilding it by hand means looking up each position’s price for that day. We rebuild it from the venue’s own published price history, position by position, which is also what lets somebody file a year that ended before they had heard of us. Where the venue published no price that day we say so and leave the position out, rather than inventing a mark.
That is what we hand your accountant: not a view on how you should file, but the figures underneath it and a trail back to every trade behind them.
Guides I have written
- Guide
Prediction Market Taxes: How Prediction Markets Are Taxed
Read the guide - Guide
Is Coinbase Legal in Maryland? City Suit Stayed
Read the guide - Guide
Is Robinhood Legal in Missouri? AG Deadline Passed
Read the guide - Guide
Why Most Prediction Markets Don't Send a 1099
Read the guide - Guide
Is Coinbase Legal in Connecticut? Appeal Pending
Read the guide - Guide
Is Coinbase Legal in Illinois? Injunction Pending
Read the guide - Guide
Is Coinbase Legal in Michigan? Sports Contracts Halted Oct 10
Read the guide - Guide
Is Coinbase Legal in Nevada? Three Contract Categories Enjoined
Read the guide - Guide
Is Coinbase Legal in New York? Remand Pending
Read the guide - Guide
Is Kalshi Legal in New Mexico? AG Suit Pending
Read the guide - Guide
Is Robinhood Legal in Connecticut? C&D, CFTC Suit
Read the guide - Guide
Is Kalshi Legal in Arizona? Charges Blocked
Read the guide - Guide
Is Kalshi Legal in Connecticut? Order and Suit
Read the guide - Guide
Is Kalshi Legal in Illinois? The Preemption Ruling, Explained
Read the guide - Guide
Is Kalshi Legal in Kentucky? Suit and HB 757
Read the guide - Guide
Is Kalshi Legal in Rhode Island? Ruling Pending
Read the guide - Guide
Is Polymarket Legal in Missouri? The AG's QCX Letter
Read the guide - Guide
Is Polymarket Legal in Ohio? The QCX Lawsuit
Read the guide - Guide
Is Robinhood Legal in Michigan? Sports Stopped by Court Order
Read the guide - Guide
Is Robinhood Legal in Nevada? Sports Stopped by Agreement
Read the guide - Guide
Is Robinhood Legal in Washington State? Enforcement on Hold
Read the guide - Guide
Is Kalshi Legal in Iowa? Kalshi's Appeal Pending
Read the guide - Guide
Is Kalshi Legal in Maryland? Appeal Pending
Read the guide - Guide
Is Kalshi Legal in Minnesota? New Law Paused
Read the guide - Guide
Is Kalshi Legal in Missouri? The AG's Letter
Read the guide - Guide
Is Kalshi Legal in New Jersey? Enforcement Blocked
Read the guide - Guide
Is Kalshi Legal in Ohio? The Sixth Circuit Ruling
Read the guide - Guide
Is Kalshi Legal in Tennessee? Sixth Circuit Ruling
Read the guide - Guide
Is Kalshi Legal in Wisconsin? The State Has Sued
Read the guide - Guide
Is Robinhood Legal in Kentucky? Sued With Kalshi
Read the guide - Guide
Is Robinhood Legal in Massachusetts? On Appeal
Read the guide - Guide
Is Kalshi Legal in New York? Lawsuit Pending
Read the guide - Guide
Is Polymarket Legal in Kentucky? Remand Pending
Read the guide - Guide
Is Polymarket Legal in Maryland? Baltimore Suit
Read the guide - Guide
Is Polymarket Legal in Michigan? Case Pending
Read the guide - Guide
Is Polymarket Legal in Minnesota? Law on Hold
Read the guide - Guide
Is Polymarket Legal in Nevada? Court Injunction
Read the guide - Guide
Is Polymarket Legal in New York? Lawsuit Pending
Read the guide - Guide
Is Polymarket Legal in Rhode Island? Case Pending
Read the guide - Guide
Is Polymarket Legal in Wisconsin? Suit Pending
Read the guide - Guide
Is Kalshi Legal in California? The Tribal Case, Explained
Read the guide - Guide
Is Kalshi Legal in Florida? No Case, and the Seminole Compact
Read the guide - Guide
Is Kalshi Legal in Texas? No Case, and a Senate Study
Read the guide - Guide
How Realize checks its numbers
Read the guide - Guide
How to Fill Out Form 6781 for Event Contracts
Read the guide - Guide
Prediction Market Capital Gains and Form 8949
Read the guide - Guide
Is Kalshi Gambling? What the Courts Have Ruled
Read the guide - Guide
Is Kalshi Legal in Massachusetts? Order on Hold
Read the guide - Guide
Is Kalshi Legal in Michigan? Only Sports Is Off
Read the guide - Guide
Is Kalshi Legal in Nevada? What's Blocked and Why
Read the guide - Guide
Is Kalshi Legal in Washington State? What's Off
Read the guide - Guide
Kalshi Supreme Court Tracker: Petitions and Dates
Read the guide - Guide
Are Prediction Market Losses Tax Deductible? What You Can Claim
Read the guide - Guide
How to File Kalshi Taxes (2026): Step by Step
Read the guide - Guide
How to Amend a Tax Return for Prediction Market Losses
Read the guide - Guide
Are Prediction Markets Taxed as Gambling?
Read the guide - Guide
Arbitrage Betting Taxes: How Profits Are Taxed
Read the guide - Guide
How to Track Prediction Market Trades for Taxes
Read the guide - Guide
OBBBA 90% Gambling-Loss Limit Under §165(d)
Read the guide - Guide
What Bettors Get Wrong About Taxes
Read the guide - Guide
What Is the Section 1256 60/40 Rule?
Read the guide
Elsewhere
The limits of all this
What I can do is organize your trades, compute a position, show every step, and be honest about which parts of the law are settled and which are not. Take the output to someone who is qualified. That is what it is built for.
Price your year three common ways.
Your estimate is free. Forms for tax year 2026 open for filing in 2027.