Affiliate Income and Tax: What Gets Reported, What You Owe, and What Changed for 2026

This is general information, not tax advice. Nobody writing an article knows your situation, your country, or your entity structure, and tax rules change. Use this to know what questions to ask and what records to keep, then get an accountant for anything that costs real money.

With that said: affiliate income has a reporting layer that most people learn about the hard way, and 2026 is a year where the rules genuinely changed. If you promote anything for commission — a trading course, software, prop firms, whatever — this is the part of the business nobody covers, right alongside the disclosure rules that decide whether your account survives.

The rule that never changes

Start here, because everything else is detail:

Commission income is taxable when you earn it, whether or not anybody sends you a form.

The IRS states it directly in its own Form 1099-K guidance: "Whether or not you receive a Form 1099-K, you must still report any income on your tax return." The information return exists to help the tax authority cross-check what you report. It is not what creates the obligation, and its absence doesn't remove one.

This matters more in 2026 than it did last year, because the thresholds moved up. More affiliates will now receive nothing in the post and owe exactly what they owed before.

What changed for 2026 (US)

Two thresholds shifted under the tax legislation signed in July 2025:

Form	Old threshold	Now	What it covers
1099-NEC / 1099-MISC	$600	$2,000 for tax year 2026, inflation-adjusted from 2027	Payments for services from a business to a non-employee
1099-K	$600 (as legislated), with delayed enforcement	More than $20,000 and more than 200 transactions	Payments settled through card processors and third-party payment platforms

Two things to take from the table:

The 1099-K test is an AND, not an OR. The IRS wording is that third-party settlement organisations aren't required to file unless the gross amount exceeds $20,000 and the number of transactions exceeds 200. Both. A single affiliate earning $30,000 across 40 payouts clears one test and not the other — and receives nothing.

The 1099-NEC jump from $600 to $2,000 is large in this niche specifically, because affiliate earnings cluster at the low end. Plenty of part-time affiliates land between those two numbers. Under the old rule a form arrived and prompted them; now nothing arrives, and the income is just as taxable.

The honest summary: the reporting thresholds went up, the tax didn't. If your mental model was "I'll know I owe tax because a form will show up," that model is now broken.

Which form should an affiliate expect?

This confuses everyone, so here's the shape of it.

• 1099-NEC is for payments for services — a business paying a non-employee for work. An affiliate arrangement is arguably marketing services, so a company paying you commission directly might issue one.
• 1099-K is for payments settled through a payment platform or card processor. If your commissions arrive through a platform that handles the payments, that's the form the platform's rules point to.

Here's the part worth internalising: which form arrives is a decision the payer makes about its own classification, and you don't control it. Some affiliates get a 1099-NEC, some get a 1099-K, some get both from different programmes, and plenty get neither because they're under the thresholds.

It changes almost nothing on your end. For a US sole proprietor, affiliate commission is self-employment income reported on Schedule C either way. The form is a cross-check, not a category.

What you should control: give every programme accurate tax details up front. In the US that means a W-9 (or a W-8BEN if you're a non-US person receiving US-source income). If a payer doesn't have a valid taxpayer ID, backup withholding applies at 24% — meaning nearly a quarter of your commission gets withheld and sent to the IRS, and you're recovering it at filing time instead of holding it. Nothing about that is a penalty on you specifically; it's just the default when the paperwork is missing.

Self-employment tax is the part that surprises people

The number that catches new affiliates isn't income tax. It's self-employment tax.

In the US, net earnings from self-employment of $400 or more mean you must file a Schedule SE. The self-employment tax rate is 15.3% — 12.4% for Social Security and 2.9% for Medicare — and it applies on top of your income tax, because as a sole proprietor you're paying both halves of what an employer would otherwise split with you.

Two practical consequences:

• The $400 threshold is on net, not gross. Legitimate business expenses come off first. $2,000 of commissions with $1,700 of genuine costs is $300 of net earnings.
• Withholding doesn't happen automatically. Nobody is taking tax out of your commissions the way an employer does with a salary, which is why quarterly estimated payments exist and why underpayment penalties surprise first-year affiliates. The standard practical advice is to set aside a fixed percentage of every payout the day it lands, in a separate account, and never treat the gross number as your money.

The affiliate-specific wrinkles nobody mentions

Generic self-employment tax articles miss the three things that are actually particular to this business.

1. Refund clawbacks

Most affiliate programmes claw back commission automatically when a buyer refunds — Whop does, and any programme worth promoting does. Which means your gross commission and the money you keep are different numbers, and they can be different across a year boundary: a sale in December, a refund in January.

Keep the statements. What you're taxed on is your actual income, and if you're reporting from your own records rather than from a form, you need those records to show the clawbacks as well as the credits. When a clawback lands in a later tax year than the sale, that's a genuinely fiddly question and exactly the sort of thing to hand to an accountant rather than guess.

2. Earned versus withdrawn

On most platforms, commission credits to a balance and you withdraw it later. Whop, for instance, pays into your own company balance, which you then withdraw from.

Do not assume that leaving money in a platform balance defers the income. There's a well-established doctrine — constructive receipt — that treats income as received once it's available to you without substantial restriction, regardless of whether you moved it. Whether it applies to a particular platform balance depends on the terms, but the safe default is to treat commission as earned when it's credited and available, not when it hits your bank.

3. Multiple currencies

If you promote programmes that pay in a currency other than your own, you're converting at some rate on some date, and your tax authority has rules about which. Record the payout date, the original amount, and what actually landed. It's five seconds a payout and it's miserable to reconstruct a year later.

If you're not in the US

Two things are true almost everywhere, and the details are yours to check locally:

You declare it. Affiliate commission is business or self-employment income in most systems, usually with a registration requirement once you pass some threshold. Some countries have a small-earnings allowance that means you owe nothing below a certain figure — the UK's trading allowance is a well-known example — but "I owe nothing" and "I don't have to tell anyone" are different statements, and conflating them is where people get into trouble.

The data increasingly exists. The EU's DAC7 rules and the OECD model rules they're based on require digital platform operators to collect seller information and report it to tax authorities, including platforms based outside the EU that facilitate transactions for EU sellers. Whether a particular affiliate payment falls inside those rules depends on how the platform and the activity are classified — but the era of platform income being invisible to tax authorities is ending, and building a business on the assumption that it isn't visible is a bad plan.

If you're VAT-registered or considering it, that's a separate question again with a genuinely different answer depending on where you and the payer are established. Ask someone local.

The records worth keeping from day one

None of this is difficult if you keep records as you go, and all of it is unpleasant if you don't. A monthly habit is enough:

• Commission statements from every programme, downloaded and stored — not left in a dashboard you might lose access to.
• Clawbacks and refunds, separately, so gross and net are both reconstructable.
• Payout dates and amounts, including currency and the amount received.
• Business expenses: hosting, domain, email tools, editing software, paid traffic if you run any, and the ordinary and necessary costs of running the site or channel.
• Any tax forms you receive, matched against your own numbers. If a form disagrees with your records, find out why before filing rather than after.

The bar to clear is simple: could you reconstruct the year from your own records if no form ever arrived? Given the 2026 thresholds, that's not a hypothetical anymore.

The bottom line

Affiliate income is ordinary business income with an unusually confusing reporting layer on top. For 2026 the layer got quieter — a $2,000 1099-NEC threshold and a 1099-K threshold back at more than $20,000 and more than 200 transactions — while the underlying obligation stayed exactly where it was.

Treat every payout as pre-tax money, set a percentage aside on arrival, keep your own statements, register properly where you live, and get an accountant before it gets complicated rather than after.

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Promoting a trading course as part of that income? The CRTLAB affiliate programme pays 60% commission — double Whop's 30% platform default — with 30-day attribution and automatic clawback on refunds, so the numbers you keep records of are stated plainly up front. The commission calculator models any programme's arithmetic including the refund rate, and how to promote a trading course covers the traffic side.

FAQ

Do I have to pay tax on affiliate marketing income? Yes. Affiliate commission is taxable income in essentially every system, and in the US the IRS states plainly that you must report income whether or not you receive a Form 1099-K. Receiving no tax form means no form was filed about you — it does not mean the income is untaxed.

What is the 1099 threshold for affiliate income in 2026? For tax year 2026 the 1099-NEC and 1099-MISC threshold rises from $600 to $2,000, adjusted for inflation from 2027. The 1099-K threshold has reverted to more than $20,000 in gross payments and more than 200 transactions — both tests must be met before a platform is required to file.

Will I get a 1099 for affiliate commissions? Maybe, and it depends on how the payer classifies the payment and whether you cross the thresholds. Direct payments for services point to a 1099-NEC; payments settled through a payment platform point to a 1099-K. You don't control which. For a US sole proprietor the income goes on Schedule C either way.

Do I owe tax if I made less than $600 in affiliate commissions? The income is reportable regardless of amount. What the thresholds decide is whether a payer must file an information return about you — and for 2026 that threshold is $2,000 for a 1099-NEC, not $600. Separately, US self-employment tax kicks in at $400 of net earnings, which is a lower bar than either reporting threshold.

Do I pay self-employment tax on affiliate income? In the US, yes, if net earnings from self-employment are $400 or more. The rate is 15.3% — 12.4% Social Security plus 2.9% Medicare — on top of income tax, because you're paying both the employee and employer halves as a sole proprietor.

Why was 24% withheld from my affiliate payout? That's likely backup withholding, which applies at 24% when a payer doesn't hold a valid taxpayer identification number for you. The fix is to submit an accurate W-9 (or W-8BEN if you're a non-US person) to the programme. Withheld amounts are credited against your tax at filing, but you're financing the government in the meantime.

How do refund clawbacks affect my affiliate taxes? You're taxed on income you actually earn, so clawed-back commission shouldn't be taxed as income you kept — but you need records showing both the credit and the clawback, especially when the refund falls in a different tax year from the sale. That cross-year case is worth asking an accountant about rather than guessing.

Do I pay tax when commission is credited or when I withdraw it? Don't assume leaving money in a platform balance defers anything. The constructive receipt doctrine generally treats income as received once it's available to you without substantial restriction. The safe default is to treat commission as earned when it's credited and withdrawable, not when it reaches your bank account.

Do non-US affiliates have to report platform income? Almost certainly, under local self-employment or business income rules, and some countries have a small-earnings allowance below which no tax is due — which is not the same as no obligation to declare. The EU's DAC7 rules also require digital platforms, including non-EU ones serving EU sellers, to report seller data to tax authorities.