Predatory Contract Clauses Every Substack Writer Should Know

The newsletter economy is booming. Substack alone has over 35 million active subscriptions, and brands are pouring money into newsletter sponsorships like never before. If you're a Substack writer with even a modest audience, you've probably been approached by a brand wanting to sponsor a post.

Here's the problem: as the money gets bigger, the contracts get worse. Brands and agencies are bringing enterprise-level legal agreements to what are essentially deals with individual creators. And most Substack writers — who got into this because they love writing, not because they love reading legal documents — are signing contracts with clauses that would make a lawyer's jaw drop.

I've reviewed hundreds of sponsorship contracts sent to newsletter writers. The same predatory clauses show up again and again. Here are the six you absolutely need to watch for.

1. The "Net-60+" Payment Terms Trap

What it looks like in the contract:

“

"Compensation shall be payable within sixty (60) business days following publication of the Content and receipt of a valid invoice."

Catch the trick? "Business days." Sixty business days is roughly 12 calendar weeks — that's three months. And it doesn't start until after publication AND after they receive your invoice. If you forget to send the invoice right away (because you were busy, you know, writing), add another week or two.

What to do: Push for Net-30 calendar days upon delivery of the final draft. Always clarify whether "days" means calendar days or business days. And never let the trigger be something outside your control like "publication date."

2. The Kill Fee Black Hole

What it looks like in the contract:

“

"Either party may terminate this Agreement at any time prior to publication. In the event of termination, no fees shall be due or payable."

Translation: The brand can cancel the project after you've spent 20 hours researching, outlining, and writing — and they owe you nothing. Zero. You've donated your time for free.

This clause is especially dangerous for Substack writers because sponsored posts often require significant research to integrate the brand's message naturally with your editorial voice. You can't just phone it in — and you shouldn't have to eat the cost if they change their mind.

What to do: Insist on a kill fee clause. Industry standard is 25% if cancelled before you start writing, 50% if cancelled after you deliver a first draft, and 100% if cancelled after the final draft is approved. Here's language you can propose:

“

"In the event of cancellation by Client: 25% of the agreed fee is due if cancelled before draft delivery; 50% if cancelled after first draft delivery; 100% if cancelled after final draft approval."

3. The "Unlimited Revisions" Money Pit

What it looks like in the contract:

“

"Writer agrees to make all revisions and modifications as reasonably requested by Client until the Content meets Client's satisfaction."

"Reasonably requested" and "Client's satisfaction" are doing a lot of heavy lifting in that sentence. In practice, this means the brand can ask for revision after revision after revision — changing the angle, the tone, the structure, even the core argument — and you're contractually obligated to keep rewriting until they're happy. For the same flat fee.

I've seen Substack writers go through seven rounds of revisions on a single sponsored post because the brand's marketing team kept changing their mind about the messaging. Seven rounds — for a $1,200 post. By the end, the writer had effectively earned about $15/hour.

What to do: Cap your revisions. Two rounds is standard in the industry. Your counter-language should look like this:

“

"Fee includes up to two (2) rounds of revisions on the draft. Additional revisions beyond this scope will be billed at [your hourly rate] per hour, with prior written approval."

4. The IP Assignment Overreach

What it looks like in the contract:

“

"Writer hereby assigns to Client all right, title, and interest in and to the Content, including all intellectual property rights therein, in perpetuity, throughout the universe."

"Throughout the universe" sounds absurd — and it is — but this is real language from real contracts. This clause means the brand owns your words forever. They can republish them, modify them, put them in ads, or sell them to a third party. You can't even reuse your own writing in your own newsletter.

For a Substack writer, this is particularly dangerous because your archive IS your product. Your subscribers pay for your unique perspective and voice. If a brand owns a piece of content that lives on your Substack, you've created a legal gray area around your own publication.

What to do: Replace the assignment with a limited license. The brand needs the right to share and promote the post — they don't need to own it. Try this:

“

"Writer grants Client a non-exclusive license to use, reproduce, and distribute the Content for [12 months] from the date of publication, solely in connection with Client's marketing efforts. Writer retains all ownership and intellectual property rights."

5. The Non-Compete Stranglehold

What it looks like in the contract:

“

"Writer agrees not to create, publish, or promote content for any Competing Brand for a period of six (6) months following the publication of the Content."

What counts as a "Competing Brand"? The contract often doesn't say — which means the brand could argue that any company in their general industry is a competitor. If you write a sponsored post for a productivity app, does that mean you can't write for any other software company for six months?

For Substack writers who rely on a steady stream of sponsorships, a broad non-compete can cut off a significant portion of your income. Six months of exclusivity for a single sponsored post is wildly disproportionate.

What to do: Either eliminate the non-compete entirely (your preferred outcome) or narrow it significantly:

“

"Writer agrees not to publish sponsored content for [specific competitor name(s)] within [30 days] of the Content publication date. This restriction applies solely to paid sponsorships and does not limit Writer's editorial content."

6. The Indemnification Trap

What it looks like in the contract:

“

"Writer shall indemnify, defend, and hold harmless Client from any and all claims, damages, losses, and expenses arising from or related to the Content, including but not limited to claims of defamation, copyright infringement, or false advertising."

This clause means that if anyone sues the brand over the content you wrote — even if the brand provided the claims, product information, or talking points — you're legally on the hook. You'd be responsible for the brand's legal fees, settlements, and damages. For a sponsored post that paid you $2,000, you could be liable for tens of thousands in legal costs.

This is particularly insidious in sponsored content because the brand is often providing you with specific claims to make about their product. If those claims turn out to be false or misleading, why should you bear the legal liability?

What to do: Push for mutual indemnification and carve out brand-provided content:

“

"Each party shall indemnify the other against claims arising from their own actions or materials. Writer's indemnification obligation shall not extend to claims arising from product information, claims, or materials provided by Client."

How to Protect Yourself: A Practical Checklist

Before you sign your next sponsorship contract, run through this checklist:

1. 1Payment terms: Are they Net-30 or better? Calendar days, not business days? Triggered by delivery, not publication?
2. 2Kill fee: Is there one? Does it cover you at every stage of the project?
3. 3Revisions: Are they capped? Is there a process for additional revision requests?
4. 4IP rights: Are you granting a license or an assignment? Is it time-limited?
5. 5Non-compete: Is it narrow and specific? Is the duration reasonable (30 days max)?
6. 6Indemnification: Is it mutual? Are you carved out from brand-provided claims?

If any of these are missing or unfavorable, flag them before you sign. Remember: the contract is a starting point for negotiation, not a final document.

The Bigger Picture: Why This Matters for the Newsletter Economy

Every time a Substack writer signs a contract with predatory terms, it makes those terms more "standard." Brands learn that freelancers will accept Net-60, unlimited revisions, and full IP assignment — so they keep putting them in contracts. The only way to change the norm is for writers to push back, collectively.

You don't need a law degree to negotiate a fair contract. You need to know what to look for, and you need the language to push back. That's exactly what tools like contract analyzers are built for — to give individual creators the same intelligence that brands get from their legal teams.

Your words have value. Your time has value. Make sure your contracts reflect that.