Organic, social & brand marketing
Books and taxes for newsletter growth agencies.
A monthly retainer for growing a client's list, swap fees paid to get in front of another newsletter's subscribers, referral rewards for readers who bring friends, and sponsor money that passes through before it reaches the client. Gus sorts all of it, an accountant checks every transaction, and you get one number a month.
- From $197 a month
- An accountant on every transaction
- Cancel whenever
April came in at $9,500. A sponsor paid $4,000 for an ad slot in Client U's newsletter, so I kept that apart from your growth fee, it belongs to the client once your cut is taken out.
- Growth retainer, Client URetainer revenue
- Sponsor ad slot, Client U newsletterSponsor pass-through
- Swapstack placement feeList swap costs
- Referral reward payoutsReferral program costs
- Beehiiv subscription, tier upgradeEmail service costs
Why your books are different
Newsletter growth agency books go wrong in the same few places.
A generalist sees a retainer payment and a swap invoice. Your business is a growth fee that sits next to sponsor money that only passes through your account, list swap costs that vary week to week, and email tool bills that grow with every new subscriber you bring in. When the books do not know that, you cannot tell what the agency actually kept.
-
1
Sponsor money passing through looks like your revenue
A sponsor pays $4,000 for an ad slot in a client's newsletter, and it lands in your account before being forwarded to the client, minus your placement fee. Booked as revenue, it makes the agency look bigger than the fee it actually earned.
What we doBooks sponsor payments as a pass-through, in and back out to the client, so only your placement fee counts as income. -
2
List swap costs swing week to week
A placement in another newsletter through Swapstack or Paved costs something different every time depending on the list size and topic fit, so it is hard to tell if swaps are actually a good deal for growing a client's list.
What we doKeeps list swap costs in their own category, so you can see cost per new subscriber against what a client pays for growth. -
3
Referral rewards get lost in general expenses
Prizes and rewards paid out to readers who refer friends to a client's list often land in a generic expense line, so it is hard to see what a referral program actually costs against the subscribers it brings in.
What we doKeeps referral program costs in their own line, so the true cost of list growth through referrals stays visible. -
4
An email tool bill grows without anyone noticing why
Beehiiv, ConvertKit, and similar tools price by subscriber count, so a successful growth campaign quietly pushes a client's email bill into a higher tier, and that jump can look like a random cost spike if nobody is watching for it.
What we doFlags when an email service bill jumps because a client's list crossed into a bigger tier, so the increase reads as growth, not a mistake.
Your categories
The categories Gus keeps for a newsletter growth agency.
Set up once for how you get paid and what you spend. You never pick a category. He does, and an accountant checks it.
Money in
- Retainer revenueMonthly billing for ongoing list growth work.
- Sponsor pass-throughAd slot payments collected for a client's newsletter, minus your placement fee.
- Launch and setup feesOne-time fees for launching a new client newsletter.
- Strategy audit feesOne-time engagements reviewing a client's list and growth plan.
Money out
- List swap costsSwapstack, Paved, and direct newsletter cross-promotion fees.
- Referral program costsRewards and prizes paid to readers who refer friends.
- Email service costsBeehiiv, ConvertKit, and Substack fees, tied to each client's list size.
- Sponsor pass-throughThe sponsor payment itself, matched to what gets forwarded to the client.
- Contractor payoutsFreelance writers and designers paid through Upwork or direct invoice.
- Coworking and officeShared office space or a home office setup.
What we watch for you
- Retainer revenue
The steady piece of income, separate from sponsor money passing through your account.
- Cost per new subscriber
What swaps and referral rewards actually cost against the subscribers they bring in.
- Sponsor pass-through
How much sponsor cash sits in your account before it moves on to the client, kept apart from your own placement fee.
- The set-aside
What you will owe, tracked every month no matter how a sponsor payment passed through the account.
Ask Gus
Things newsletter growth owners ask Gus.
Text him like you would text anybody. He answers in plain English, and when a question is above his pay grade, an accountant looks and gets back to you.
No. I booked it as a pass-through, in and back out to the client, so only your placement fee counts as what you earned.
No, their list crossed into a bigger subscriber tier, so the bill went up with it. I flagged that as growth, not a billing mistake.
If you pay her $2,000 or more this year and she is not on payroll, she gets a 1099-NEC by January 31. I keep that list running as we go.
The tax side
The tax side of a newsletter growth agency.
Most of what goes wrong here is what counts as income. Sponsor money booked like revenue, a designer treated like an employee, and a set-aside nobody started until April.
What your return has to get right
Your accountant signs it, so it gets done right the first time.
- Sponsor pass-throughs are not your incomeMoney a sponsor pays for an ad slot in a client's newsletter is not your revenue once it gets forwarded on. It passes through, in and back out, and only your placement fee counts as income.
- Contractor 1099sAnyone not on payroll paid $2,000 or more in 2026, a freelance writer or designer, gets a 1099-NEC by January 31. Gus keeps the list all year.
- The pass-through deductionMost owner-operated agencies can take up to 20 percent of business profit off their taxable income. Once income passes roughly $200,000 single, the accountant checks how much applies once sponsor pass-throughs are set aside.
- Self-employment taxA solo owner not paid through payroll owes 15.3 percent in self-employment tax on top of income tax, up to the $184,500 Social Security wage base.
Deductions newsletter growth agencies miss
Your bookkeeper knows what to look for in your statements. You never have to.
- Beehiiv or ConvertKit subscription
- Swapstack or Paved fees
- Referral reward payouts
- Freelance writer payments
- Freelance designer payments
- Business liability insurance
- Coworking space
- Business phone and internet
- Website hosting for the agency
- Accounting and legal fees
General information about 2026 federal rules, not advice for your business. Your accountant looks at your actual numbers before anything gets filed.
All year, not just April
A newsletter growth agency's year, kept every month.
List growth campaigns can launch any week of the year, but tax deadlines do not move. Your team keeps you ahead of both. Every month in between, your bookkeeper closes the books and speaks up the moment something looks off.
- January
Set the year's course
Last year's return gets started, the freelance writer and designer 1099 list is ready, and you get a monthly set-aside so April is already handled.
- April
Filed and locked in
Your return is filed and signed. No surprise bill, since the set-aside kept pace with the year's swaps and sponsors.
- July
Halfway look-in
Where you stand, what you will owe, and whether cost per new subscriber is holding steady across your clients.
- October
Before growth planning
Clients plan next year's list growth and sponsorship goals around this time. Gus looks at which swaps and referral programs paid off before those talks.
What you get
What you pay depends on what your business needs, and it does not move after that, busy season or slow. No hourly bills, no surprise invoices, no setup fee.
Book a call- Monthly bookkeeping
Every transaction sorted into categories set up for newsletter growth agencies. You never categorize a thing.
- An accountant checks every transaction
Real review, every month, before your books close. Not a spot check.
- Your business tax return, filed
Prepared, reviewed, and signed by that same accountant every year.
- The monthly number
What you made, what you spent, what to set aside for taxes.
- Your own bookkeeper
A real person assigned to your business, in the app whenever you need them. No hold music.
- On your books all year
Every month, not just in April. Your team speaks up whenever something is worth your attention.
- Cancel any time
No contract. No cancellation call. Your books are yours.
Straight answers
Questions newsletter growth owners ask first.
A sponsor pays us directly for an ad slot before we forward the money to the client. Does that count as our revenue?
No. Gus books it as a pass-through, in and back out to the client, so your taxable income only reflects the placement fee you actually kept.
A client's email tool bill keeps growing as their list gets bigger. Is that a mistake?
Usually not. Gus flags when a bill jumps because a list crossed into a bigger subscriber tier, so it reads as growth, not an error.
List swap costs seem to change every time we book one. Can Gus tell me if swaps are actually worth it?
Yes. List swap costs sit in their own category, so you can see cost per new subscriber against what a client pays for growth.
We pay out referral rewards to readers who bring friends. Does that get tracked separately?
Yes. Referral program costs sit apart from general expenses, so you can see what growth through referrals actually costs.
My books mix retainer fees, swap costs, and sponsor money together right now. Can that get sorted out?
Yes. Send the bank statements you have. Gus sorts out what was swap spend, what was sponsor money passing through, and what was actually your fee, then the accountant checks it. Most owners know where they stand within a week.
Is a real accountant checking my books?
Yes. You get your own bookkeeper, Gus does the first pass on every transaction, and an accountant checks every one before your month closes. That same accountant prepares, signs, and files your business return. Goatkeeper is not a CPA firm, and we never pretend a person looked when they did not.
What does it cost, and can I cancel?
It starts at $197 a month, depending on what your business needs. No setup fee, no hourly bills, no contract. Cancel any time from the app, and your books go with you.
More in organic, social & brand marketing
We keep books for the business next door too.
- AI search & generative engine optimization (GEO) agencies
- Community management agencies
- Podcast booking agencies
- Freelance UGC creators
- Ghostwriting agencies (LinkedIn, X)
- Personal brand agencies
- Podcast production agencies
- PR firms
- Reputation management firms
- Short-form video & clipping agencies
- YouTube channel management agencies
- Content marketing agencies
- Influencer marketing agencies
- Local SEO & Google Business Profile specialists
- UGC creator agencies
- SEO agencies
- Social media management agencies
- 3D rendering & visualization studios
- AI creative & AI content studios
- Audio production & jingle studios
- Billboard & out-of-home advertising companies
- Church & ministry marketing agencies
- Event & experiential marketing agencies
- Illustrators
- Packaging design firms
- Pay-per-call networks
- Presentation & pitch deck design agencies
- Recruitment marketing agencies
- Sports marketing agencies
- Voiceover artists
What makes a bookkeeper worth paying for Every business we keep books for
Book a call
Pick a time. That's the whole signup.
Fifteen minutes with a real person on our team. They look at where your books are, tell you straight what it takes to get caught up, and get you set up on the spot if it fits.
- $197 a month to start
- An accountant on every transaction
- Cancel whenever