Purpose
Aggregates tax amounts collected across all orders in a period, broken down by tax jurisdiction (state/province, country) and tax rate. Produces a summary suitable for periodic tax filing prep. Read-only — no mutations.
Prerequisites
- Authenticated Shopify CLI session:
shopify store auth --store <domain> --scopes read_orders - API scopes:
read_orders
Parameters
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
| store | string | yes | — | Store domain (e.g., mystore.myshopify.com) |
| days_back | integer | no | 90 | Lookback window (use 30/90 to match filing periods) |
| group_by | string | no | jurisdiction | Breakdown: jurisdiction or rate |
| exclude_refunded | bool | no | true | Exclude tax from fully refunded orders |
| format | string | no | human | Output format: human or json |
Safety
ℹ️ Read-only skill — no mutations are executed. Safe to run at any time. This report is for internal preparation purposes only — consult a tax professional for actual filing obligations.
Workflow Steps
-
OPERATION:
orders— query Inputs:query: "financial_status:paid created_at:>='<NOW - days_back days>'",first: 250, selecttaxLines { title, rate, priceSet },refunds { refundLineItems }, pagination cursor Expected output: All paid orders with tax lines; paginate untilhasNextPage: false -
If
exclude_refunded: subtract tax amounts from fully refunded orders -
Group by
group_by(jurisdiction title or rate); sumtaxLine.priceSet.shopMoney.amount
GraphQL Operations
graphql# orders:query — validated against api_version 2025-01 query TaxLiabilityOrders($query: String!, $after: String) { orders(first: 250, after: $after, query: $query) { edges { node { id name createdAt displayFinancialStatus totalTaxSet { shopMoney { amount currencyCode } } taxLines { title rate priceSet { shopMoney { amount currencyCode } } } shippingAddress { countryCode provinceCode } refunds { totalRefundedSet { shopMoney { amount currencyCode } } } } } pageInfo { hasNextPage endCursor } } }
Session Tracking
Claude MUST emit the following output at each stage. This is mandatory.
On start, emit:
╔══════════════════════════════════════════════╗ ║ SKILL: Tax Liability Summary ║ ║ Store: <store domain> ║ ║ Started: <YYYY-MM-DD HH:MM UTC> ║ ╚══════════════════════════════════════════════╝
After each step, emit:
[N/TOTAL] <QUERY|MUTATION> <OperationName> → Params: <brief summary of key inputs> → Result: <count or outcome>
On completion, emit:
For format: human (default):
══════════════════════════════════════════════ TAX LIABILITY SUMMARY (<days_back> days) Orders analyzed: <n> Total tax collected: $<amount> By Jurisdiction: CA - California $<amount> (<n> orders) NY - New York $<amount> (<n> orders) Output: tax_liability_<date>.csv ══════════════════════════════════════════════
For format: json, emit:
json{ "skill": "tax-liability-summary", "store": "<domain>", "period_days": 90, "orders_analyzed": 0, "total_tax_collected": 0, "currency": "USD", "by_jurisdiction": [], "output_file": "tax_liability_<date>.csv" }
Output Format
CSV file tax_liability_<YYYY-MM-DD>.csv with columns:
jurisdiction, country_code, province_code, tax_rate, order_count, total_tax_collected, currency
Error Handling
| Error | Cause | Recovery |
|---|---|---|
THROTTLED | API rate limit exceeded | Wait 2 seconds, retry up to 3 times |
| No tax lines on orders | Tax not configured or tax-exempt orders | Report $0 for those orders |
| Orders with partial refunds | Tax credit complex to calculate | Flag in output; exclude from totals if exclude_refunded: true |
Best Practices
- This report reflects tax collected from customers — it is not a substitute for Shopify Tax or a professional nexus analysis.
- Align
days_backwith your filing period (30 days for monthly filers, 90 for quarterly). - For multi-state US merchants, check that Shopify Tax is configured correctly for each nexus state before relying on this output.
- The
jurisdictionfield intaxLines.titleis set by Shopify Tax and typically includes state/province names — verify the format matches your filing system.


