> ## Content Index > Fetch the complete content index at: https://www.incomestead.com/llms.txt > Use this file to discover other available public pages before exploring further. # Realized vs. Mark-to-Market Income: Why Counting Premium You Haven't Booked Lies to You - URL: https://www.incomestead.com/blog/realized-vs-unrealized-options-income/ - Published: 2026-07-14T06:01:11.000Z - Updated: 2026-08-16T16:27:50.000Z - Description: Option premium isn't income until one of three things happens: expiry, buyback, or assignment. Counting it before then inflates a yield you haven't earned. - Author: Stefano Starkel - Tags: Margin, #stage-2 **Realized vs. unrealized options income** comes down to one question: has the money actually become yours yet? Option premium you collect for writing a contract is *not* income the moment it lands in your account. It's a liability you've been paid to carry. It becomes realized income only when one of three things happens — the option **expires** worthless, you **buy it back** to close, or it gets **assigned**. Until then, the profit-and-loss line your broker shows you is a mark-to-market estimate that can still swing hard in either direction. I sell cash-secured puts in my own book, so I've watched that estimate lie to me in both directions. This is the accounting discipline behind counting it honestly — realised-only, on a cash basis (booked when the cash event actually happens, not marked to market) — and why the version most people run inflates a yield they haven't earned. TL;DR - **Premium ≠ income** the day you collect it. It's cash against an open obligation that can still cost you more than you were paid. - **Book it only on one of three events:** the option expires worthless, you buy it back to close, or it's assigned. - **Mark-to-market is not income.** The open position's paper value swings weekly and reverses. Counting it as earned overstates your yield. - **Assigned put:** the premium books as realized income that week; the shares you're put become a *separately tracked holding*, not more income. - Realised-only accounting is what makes a weekly income number honest, reproducible, and safe to govern against. On this page 1. [What's the difference between realized and unrealized options income?](#whats-the-difference-between-realized-and-unrealized-options-income) 2. [When does option premium actually become income?](#when-does-option-premium-actually-become-income) 3. [A worked example: one put, three endings](#a-worked-example-one-put-three-endings) 4. [What happens to the premium if I'm assigned?](#what-happens-to-the-premium-if-im-assigned) 5. [Why does booking premium early corrupt your numbers?](#why-does-booking-premium-early-corrupt-your-numbers) 6. [The honest-income check for your own book](#the-honest-income-check-for-your-own-book) 7. [Frequently asked questions](#frequently-asked-questions) ## What's the difference between realized and unrealized options income? Realized income is money the position is done producing — the trade has closed and the amount can't reverse. Unrealized "income" is the current mark-to-market value of a position that's still open: a snapshot of what you'd net if you closed right now, at this moment's prices. For a short option, that snapshot moves every day the underlying moves, and it can flip from a gain to a loss and back several times before the contract ever resolves. I lay out the honest case for the opposite convention here — [the strongest argument for mark-to-market instead](https://www.incomestead.com/what-we-believe/). The distinction isn't pedantic. When you write a put and collect $2,000, your account shows $2,000 in cash — but you've also taken on the obligation to buy stock if it's put to you. That obligation has a live cost. Book the $2,000 as income on day one and you've recorded the payment while ignoring the liability you were paid to carry. > Premium isn't a paycheck. It's a deposit against a promise you haven't finished keeping. ## When does option premium actually become income? On exactly one of three events — and not a day sooner: | Event | Income booked? | When / how much | | -------------------- | ------------------------ | -------------------------------------------------------- | | Still open | No — $0 | Mark-to-market only. Not income; it can still reverse. | | Expires worthless | Yes — full premium | Expiry week. The whole premium is now realized. | | Bought back to close | Yes — premium minus cost | The week you close. Net of what you paid to buy it back. | | Assigned | Yes — full premium | Assignment week. Shares become a separate holding. | This is what "realised-only, cash basis" means in practice: income is recognized on the event, in the week the event happens, for the amount that actually settled — never on a rolling estimate of an open position. Every one of these events is discrete and dated, which is what lets a weekly number be reproduced exactly. (To be clear, this is *governance* accounting for your own weekly read — not tax treatment. The IRS rules for options income, wash sales, and assignment cost basis are their own maze; that's a conversation for your CPA, not this page.) ## A worked example: one put, three endings Say I write a single cash-secured put and collect **$2,000** in premium, setting aside the cash to buy the shares if assigned. Here's what the mark-to-market does while it's open — and why I book none of it: Three weeks in, the underlying dips. My broker shows it would cost **$3,500** to buy the put back — the screen is now describing an unrealized $1,500 loss on a position I was paid $2,000 to open. Two weeks after that, the underlying recovers; buying it back would cost just **$600**, a paper $1,400 gain. Same contract, same premium, and the "income" line has swung by nearly $3,000 without a cent being realized. Now the contract resolves, one of three ways: The same $2,000 premium, three endings **Expires worthless →** book the full **$2,000** as realized income in the expiry week. The obligation is gone. **Bought back for $600 →** book **$1,400** ($2,000 − $600) in the week you close. You paid to end the obligation early. **Assigned →** book the full **$2,000** as realized income in the assignment week — and you now own the shares as a *separate holding* at their cost basis. The premium was income; the stock is a position, not more income. Notice that the honest number is only knowable at the end. Anyone counting the $2,000 the day they sold the put would have booked income during the very weeks the position was underwater by $1,500. > The week you sold it, you didn't know if that premium was worth $2,000 or negative $1,500\. Booking it as income anyway isn't optimism — it's a bad ledger. ## What happens to the premium if I'm assigned? Assignment is the outcome most people account for wrong. If your short put is assigned, you're obligated to buy the shares at the strike — that's the real risk that was never free, and with American-style options a short position can be assigned early, not only at expiration (see the OCC's [Characteristics and Risks of Standardized Options](https://www.theocc.com/company-information/documents-and-archives/options-disclosure-document?ref=incomestead.com), the standard options risk disclosure). When it happens, the premium you collected is **realized income in the assignment week** — that part is done. But the shares are not income. They're a new holding at their cost basis, and from that moment they carry their own weight in your book: their own allocation drift, and if you hold them on margin, their own contribution to your [margin utilization and zone](https://www.incomestead.com/blog/using-margin-safely/). That separation matters because it keeps two different things honest. The income event (premium realized) doesn't get quietly blended with the balance-sheet event (a stock position appears). If you're carrying leverage, an assignment can nudge your utilization — worth a glance at [where your loan sits against your assets](https://www.incomestead.com/blog/how-much-margin-is-safe/) the week it lands. ## Why does booking premium early corrupt your numbers? Because income is an input to how you govern the whole book, not a vanity figure. Overstated income shows up as an overstated yield, and an overstated yield invites two specific mistakes: spending or borrowing against cashflow that hasn't arrived, and telling yourself the Income Engine — the [Layer of the Incomestead Stack](https://www.incomestead.com/blog/strategy-allocation-incomestead-stack/) that's supposed to throw off realized cash — is healthier than it is. The Incomestead Stack is our whole target allocation across strategy Layers; the Income Engine is the one meant to produce spendable income, and it can only be judged on income that's real. This is also why honest income feeds the [Governance Score](https://www.incomestead.com/blog/governance-score/) — our single read on how well you're running the book, blending margin zone, allocation drift, and cadence. A Score built on mark-to-market phantom income would flatter you in exactly the weeks a position is underwater. Realised-only accounting is the deterministic foundation under it: the same closed events, booked the same way, produce the same number every time. That reproducibility is the entire point of running money as [a governed process rather than a running guess](https://www.incomestead.com/blog/portfolio-governance/). ## The honest-income check for your own book You can run this on your own open options in a few minutes — no tool required: The realized-income check 1. List every option you've written that's still open. 2. For each, ask the one question: has it **expired**, been **bought back**, or been **assigned**? If none of the three — **book $0 income** from it, no matter what the mark-to-market shows. 3. For the ones that *did* resolve this week, book the realized amount: full premium on expiry or assignment; premium minus buyback cost if you closed it. 4. Sum only those realized amounts. *That* is your income this week — the number you're allowed to govern against. If your "income" falls when you do this, it was never income — it was hope you'd been counting. None of this is a case for writing options in the first place — that's a strategy decision with real assignment risk, and undefined-risk positions can cost far more than the premium you took in. The point is narrower and it's the whole brand: if you already earn premium, count it like [an operator, not a gambler](https://www.incomestead.com/blog/is-margin-gambling/). Honest inputs are the only kind a governed book can use. Do this next Run the realized-income check on your own open options this week — then **subscribe to the Weekly Governance Dispatch**. Every issue mirrors the discipline a governed book runs on: realized income, margin zone, and drift, read the same honest way each week. [Join the founding cohort →](https://www.incomestead.com/#capture) ## Frequently asked questions ### Is option premium income when you receive it? Not for governance purposes. The cash arrives when you sell the option, but you've simultaneously taken on an obligation with a live cost. The premium becomes realized income only when the option expires worthless, you buy it back to close, or it's assigned. Before that, it's mark-to-market — an estimate that can reverse. ### What's the difference between realized and unrealized options income? Realized income is from a position that has closed; the amount is final and can't reverse. Unrealized income is the current mark-to-market value of an open position — a snapshot at today's prices that moves as the underlying moves. Only realized income should drive how you govern the book. ### When I'm assigned on a short put, is the premium still income? Yes. The premium books as realized income in the assignment week. Separately, you now own the shares at their cost basis — a new holding that carries its own allocation and, if held on margin, its own utilization. The income event and the balance-sheet event are tracked apart, not blended. ### Why not just count premium as income right away — it's already in my account? Because it overstates your yield during exactly the weeks a position may be underwater, and an overstated yield invites over-spending or over-borrowing against cash that hasn't been earned. Realised-only accounting keeps the weekly income number honest and reproducible. ### Does this realized-only rule affect my taxes? This is governance accounting for your own weekly read — not tax treatment. The tax rules for options premium, assignment cost basis, and wash sales are separate and genuinely complex; confirm anything tax-related with a qualified CPA. Nothing here is tax advice. --- **\-** This is education, not personalized financial, tax, or legal advice. I write as a practitioner who runs an income-oriented, leveraged book, not as a licensed adviser. Options carry real risk: a short put can be assigned and obligate you to buy shares, early assignment is possible with American-style options, and undefined-risk positions can lose more than the premium received. Consult a qualified professional before acting on anything here. Incomestead recommends. You decide.