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Monthly profit close
Give it the month's sales and costs. Get a P&L set against last month and what to fix first.
Monthly profit close is a free AI agent for the job "Track your numbers". Give the instructions to an AI assistant that supports the required files and tools, then review its output.
Free · No account · Made by AI Blocks · Thinking: high
What it does
Most owners look at sales each day and at profit once a quarter, if at all. By then a rising shipping cost or a slipping margin has been eating profit for months. A close done by hand also changes shape from month to month, so you can't tell a real change from a different way of counting. This agent closes the month the same way every time. In the first month it sets your unit costs, your rule for what counts as cost of goods and your P&L layout. After that it builds the P&L, sets it against last month, and writes the reason for each line that moved. If sales fell a lot, it splits the drop first. If margin fell, it checks your main products against the cost line that moved. It never changes a price, a budget or an entry in your accounts. You get a P&L…
You give it
- The month's costs and invoices, or a ledger export
- Orders, discounts, refunds, shipping collected and ad spend for the month
- Last month's P&L, from the second month on (it saves it for you after the first run)
- Your profit target and what changed this month (optional)
- Brand brain (optional)
- Your question (optional)
You get
- A P&L in dollars, percent of revenue and per order, in the same layout as last month
- The lines that moved past the limit, each with its reason, and whether it is a one-off
- A fix-first list with the money each fix is worth
- A new versus returning customer split, and a cash lever ranking if profit is under target
Use it when
- You want to know your real profit each month, not only your sales.
- Margin or profit slipped and you don't know which cost line did it.
- You want to see whether new customers pay for themselves, month after month.
How to use it
- Start a chat with the agent. In Claude Code, add it as a skill or save it in .claude/agents, then ask it to close the month.
- In the first month, give it your invoices and sales. It sets the unit costs, the cost of goods rule and the layout, and saves them.
- From the second month, put the new exports in the same folder. It compares against last month's files.
- Read the list. Make the changes you agree with yourself, and have your accountant check the cost lines it flagged.
- Run it again on the 5th of next month.