Invoice aging
44 open-source financial skills for AI agents — P&L, budgeting, tax prep, debt payoff, and more. Works with Claude Code, Wilson, Cursor, Codex, and Paperclip.
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Track unpaid invoices by age bucket and flag overdue payments.
SKILL.md
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Invoice Aging Report
Overview
Analyze accounts receivable by sorting outstanding invoices into aging buckets: Current (0-30 days), 31-60 days, 61-90 days, and 90+ days. Identifies clients with chronically late payments and calculates total exposure.
Wilson Tools Used
transaction_search— find payment transactions matched to known clients or invoice references, identify gaps where expected payments are missing
Workflow
- Ask for the list of outstanding invoices (client name, invoice amount, invoice date, due date) or ask the user to describe their invoicing pattern.
- Use
transaction_searchto find all incoming payments from each client over the past 6 months. - Cross-reference received payments against known invoice amounts and dates.
- For each unpaid or partially paid invoice, calculate days outstanding from the due date.
- Sort into aging buckets:
ACCOUNTS RECEIVABLE AGING — as of [Date]
═══════════════════════════════════════════════════════
Client Current 31-60 61-90 90+ Total
────────────────────────────────────────────────────────
Acme Corp $2,500 — — — $2,500
Beta LLC — $1,800 — — $1,800
Gamma Inc — — $3,200 — $3,200
Delta Co — — — $5,000 $5,000
────────────────────────────────────────────────────────
TOTALS $2,500 $1,800 $3,200 $5,000 $12,500
% of Total 20.0% 14.4% 25.6% 40.0% 100%
═══════════════════════════════════════════════════════
- Flag any client with invoices in the 90+ bucket.
- Calculate weighted average days outstanding.
- Recommend follow-up actions: send reminder (31-60), escalate (61-90), consider collections (90+).
Without Wilson
- Export your invoice list from your invoicing tool (QuickBooks: Reports > Customers & Receivables > A/R Aging Summary; FreshBooks: Reports > Accounts Aging; Wave: Reports > Aged Receivables).
- If no invoicing tool, create a spreadsheet with columns: Client, Invoice #, Amount, Invoice Date, Due Date, Paid Date, Paid Amount.
- Calculate days outstanding:
=IF(PaidDate="", TODAY()-DueDate, PaidDate-DueDate). - Assign buckets with:
=IF(DaysOutstanding<=0,"Current",IF(DaysOutstanding<=30,"Current",IF(DaysOutstanding<=60,"31-60",IF(DaysOutstanding<=90,"61-90","90+")))). - Pivot table: Rows = Client, Columns = Bucket, Values = Sum of Amount.
- For weighted average:
=SUMPRODUCT(Amount,DaysOutstanding)/SUM(Amount).
Important Notes
- Wilson tracks cash transactions, not invoices directly. This skill works best when you can provide a list of issued invoices to cross-reference against bank deposits.
- Partial payments should be tracked. If an invoice is $5,000 and $3,000 was received, the remaining $2,000 is still outstanding.
- Consider offering early payment discounts (e.g., 2/10 Net 30) for clients consistently in the 61-90+ buckets.