Solo Gumroad sellers hit the same wall every quarter: payouts look healthy in the dashboard, but you still don't know how much to set aside for estimated taxes after platform fees and refunds.
SellerLedger on Gumroad ($17) ships a Quarterly Set-Aside Estimator tab — enter net income plus a self-employment rate you configure, get an estimated quarterly payment. Same module is listed under WHAT'S INSIDE on their checkout and on their gh-pages landing (Tax Estimator tab).
Planning tool only. Not tax advice. Consult a tax professional for your situation.
Why net profit matters more than gross revenue
Gumroad and Stripe CSV exports include fee rows. If you set aside 28% of gross revenue, you over-save. If you wing it from memory, April surprises you.
The estimator needs one number: net profit after fees and refunds — then multiply by your configured rate.
One CLI run → set-aside estimate
python3 seller_ledger.py gumroad-sample.csv stripe-sample.csv -o ledger.csv --tax-rate 0.28
Example stdout (sample data):
Gross revenue: 131.00
Platform fees: 7.08
Net profit: 104.92
Set-aside @28%: 29.38
Change --tax-rate to match what you and your accountant use (self-employment + income tax combined, or a conservative buffer).
US quarterly estimated payment dates (2026)
| Quarter | Due date |
|---|---|
| Q1 (Jan–Mar) | April 15 |
| Q2 (Apr–May) | June 15 |
| Q3 (Jun–Aug) | September 15 |
| Q4 (Sep–Dec) | January 15 (next year) |
Run the CLI after each month's CSV export. The set-aside line tells you what to move to a separate account — same shape as Orion's Tax Estimator tab, without maintaining spreadsheet formulas.
Try free: gumroad-sample.csv + stripe-sample.csv
Landing: https://ytinumoc.github.io/toolkitlabs-invoice/ledger/#quarterly-estimator
Seller ledger CLI pack (EUR 9 one-time, instant zip): https://buy.stripe.com/dRm9AUgpwb648Jg7NX5Ne0l?client_reference_id=devto-quarterly-estimator-clone-v2-run42
30-day money-back guarantee — email support@toolkitlabs.org with your Stripe receipt.
Also: Schedule C organizer · Tax tracking from CSV · 3-step setup guide · Ledger walkthrough
Monthly P&L dashboard: Gumroad + Stripe CSV → monthly profit without a $17 sheet.
Transactions log: Gumroad + Stripe CSV → categorized ledger without a $17 sheet.
Category mapping: Gumroad + Stripe CSV → auto-categorized ledger without a $17 sheet.
Landing page playbook (clone of Orion jpmbrg $19): 7 prompts + full 30-prompt pack.
Build in public (Orion.public clone — checkout on hub): Toolkit.public · SellerLedger checkout EUR 9 · Playbook checkout EUR 9 · build logs #1 #2 #3 #4.
Freelancer starter kit (clone of Orion's $31 cqndz): 5 freelancer templates every Gumroad seller needs.
CSV auto-importer: Gumroad + Stripe CSV → categorized ledger without a $17 sheet.
CC0 · Toolkit Labs
Weekend Micro-SaaS Kit (Orion datcxy clone): Landing · dev.to walkthrough · EUR 9 checkout.
4-product checkout (Orion tools page clone — run58): Tools page · SellerLedger EUR 9 · Playbook EUR 9 · Micro-SaaS EUR 9 · Toolkit.public.
Email updates (Orion #subscribe clone — run59): Follow the build — honest ledger updates, no hype.
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AI Property Showing Kit (Orion trsoxh clone): Free 5 pre-screen questions · EUR 9 full kit.
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Quarterly estimated taxes (Quillenhart qaduu clone, olubunminelson/3n45 shape): Newly self-employed quarterly tax math · EUR 9 full kit.
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Gumroad Payout Tracker (Nagaraj/inagaraj clone — 31 Gumroad sales):
