Receipts in, net spendable out
Drop one folder of invoices and receipts, answer a few questions about your tax profile, and the SoloTreasury AI Assistant tells you this month's net spendable amount: what you can pay yourself after the income-tax, social-contribution and VAT reserves.
€29 on its own, or €69 together with the SoloTreasury Freelancer Edition sheet. Paid once.
Have only this month's folder? The Assistant is enough. Want the whole year in one place? Take the sheet with it.
Who it is for, and who it is not for
The Assistant computes the reserves for a fixed set of tax profiles. Outside them, you set your own reserve rate.
It is for you if
- You are a freelancer in Germany (single Freiberufler), Spain (individual autónomo in Madrid), France (micro-BNC with versement libératoire), the Netherlands (result from other work) or Cyprus (resident self-employed).
- You own and direct a Cyprus limited company and want this month's safe owner pay.
- You work in another country and are happy to give your own reserve rate.
- You already own a SoloTreasury sheet and want the month's documents read for you. The Assistant writes a file for the sheet's "Import from AI Assistant" command.
It is not for you if
- You want your tax return filed. The Assistant does not file anything.
- You use the free Claude plan. Skills need a paid plan, Pro or higher, or OpenAI Codex.
- You own a limited company outside Cyprus.
The Assistant plans what to set aside. It is not tax advice, and your accountant still files your returns.
What it does
One folder per month. The same questions are not asked twice.
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Drop one folder
Put a month of invoices and receipts in one folder. PDFs, photos of receipts and a bank export (CSV) all work.
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Answer a few questions
Claude asks about your tax profile once and saves the answers in the folder. Next month it only asks what changed.
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The calculator does the sums
The AI reads the documents. A small calculator that ships inside the skill computes the reserves with the same 2026 rules as the SoloTreasury sheets, so the result does not depend on what the AI "thinks".
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Read the answer
The report opens with this month's net spendable amount, then shows how it adds up and lists anything that needs your review.
The four files it writes next to your documents
The report
net-spendable-report-<date>.md: the headline figure first, then revenue, expenses, profit, the reserves, the VAT position and the next statutory dates.
A ledger CSV
ledger-<date>.csv: every document as one row, in the column order the SoloTreasury sheet uses. This is the file to share with your accountant.
A JSON file
net-spendable-<date>.json: the same numbers, for your own tools.
A sheet import file
solotreasury-import-<date>.json: for the "Import from AI Assistant" command in both SoloTreasury sheets, the Freelancer Edition and the Cyprus Company Edition.
In the sheet, the import fills only the cells you normally type in and skips invoices and expenses that are already there.
What it is not
- Not a tax filing. Nothing is sent to a tax office.
- Not tax advice. It tells you what to keep aside each month. Your accountant confirms what you owe.
- Not a silent guess. Readings it is unsure about are listed for your review in the report instead of being corrected quietly.
- Not a replacement for your accountant. Share the ledger with them; it is in the order the SoloTreasury sheet uses.
Try it on the sample folder first
The download includes a sample folder with twelve fake documents of a Berlin freelancer, and the answers to give. Run the Assistant on it and the report should open with:
This month you can safely pay yourself: 2,842.48 EUR
If it does, your installation works and you can point it at your own folder.
What you need, and how to install it
No programming is involved. Step-by-step instructions for each tool come in the download.
You need
- A paid Claude plan (Pro or higher) with the Claude desktop app or Claude Code, or OpenAI Codex.
- Python 3.8 or newer on your computer if you use Claude Code or Codex. Nothing else to install. In the Claude app the calculator runs in Claude's own environment.
- A folder with one month of invoices and receipts.
Claude desktop app
In Settings, open Capabilities and upload the skill file under Skills. Then let Claude work in your documents folder and ask it to run your net spendable.
Claude Code
Copy the skill folder into your personal skills folder (.claude/skills), start Claude Code in your documents folder and ask it to run your net spendable.
OpenAI Codex
Copy the same skill folder into the Codex skills folder (.codex/skills), start Codex in your documents folder and ask the same.
Two prices, each paid once
SoloTreasury AI Assistant
- The skill for Claude and OpenAI Codex, with the calculator inside.
- Profiles for Germany, Spain, France, the Netherlands, Cyprus and Cyprus company owners, or your own reserve rate.
- Report, ledger CSV, JSON and a sheet import file.
- Sample folder to check your installation.
- One business per purchase. Updates by email through version 1.x while the product is supported, including each year's new rates.
SoloTreasury + AI Assistant
- Everything in the AI Assistant.
- The Assistant answers one month at a time. The Freelancer Edition sheet (DE, ES, FR, NL, CY) keeps every month's invoices and expenses in one place, with one click to import each month.
- Exchange rates fetched automatically from the European Central Bank for 30 currencies, for clients you invoice in USD, GBP or CHF.
- A clean Excel export for your accountant at year end.
- €9 less than buying the sheet (€49) and the Assistant (€29) separately.
Already own a SoloTreasury sheet? Buy the AI Assistant on its own for €29. That includes owners of the Cyprus Company Edition: the import file works with the company sheet too.
Secure payment with Lemon Squeezy · Delivered by email after payment · Email support covers installation and the report, not tax advice
Price includes VAT. Lemon Squeezy, our reseller, charges the US-dollar equivalent at the mid-market rate, with no conversion fee of its own. Your bank may add its usual foreign-currency fee.