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Metrics type: Supporting Metrics • Category: Ecommerce Platform

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At a glance

Total tax collected from customers in the 30-day window. The single-number, current-period view of pass-through tax liability owed to authorities.

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Calculation

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Worked example

A UK skincare DTC brand on Shopify, VAT-registered (20% standard), VAT-inclusive pricing. 30D window 12 Apr 26 to 12 May 26. The 16.67% figure is the embedded VAT extracted from the customer-paid total. For a 20% VAT-inclusive price model: £100 gross = £83.33 net + £16.67 VAT. Six things to notice:
  1. The 16.67% is the canonical UK VAT-inclusive rate. A drift below 16% would suggest VAT-exempt customer mix shifting (e.g. EU B2B with valid VAT numbers). A drift above suggests reduced-rate items reclassified.
  2. HMRC quarterly forecast. £43k/30D × 3 = £129k/quarter. Match against your VAT-return forecast; the working draft should align within rounding.
  3. Net VAT liability differs. This card shows gross collected. Net = collected minus reclaimable input VAT (VAT on supplier purchases). The net is what you actually pay HMRC; this card is one input.
  4. Refund treatment. A refund unwinds tax: when you refund a £100 VAT-inclusive order, the £16.67 of VAT becomes reclaimable. This card doesn’t subtract that; HMRC return does.
  5. Shopify Tax engine accuracy. Reconcile this card against your accounting record monthly; persistent gaps (>2% of total) indicate misconfiguration.
  6. Multi-currency caveat. A UK + EU stores would show blended tax-effective-rate that’s nonsensical without FX normalisation. Filter to single currency (or single market).

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Sibling cards merchants should reference together

Total Tax is the £-aggregate. Companions:

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Reconciling against the vendor’s own dashboard

Where to look in Shopify Admin:
Shopify Admin → Analytics → Reports → “Taxes” (under Finance)
The most direct equivalent. Aggregate by period and rate; should match this card to within sync-lag tolerance. Other Shopify Admin views:
  • Reports → Sales by billing location: tax by region, useful for US sales-tax compliance.
  • Settings → Taxes and duties: tax-engine configuration.
  • Apps: Avalara, TaxJar, Quaderno produce their own reports.
Why our number may legitimately differ from Shopify Admin: Cross-connector reconciliation:

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Known limitations / merchant FAQs

Why does my effective rate vary month-to-month? Three usual causes:
  1. Customer-mix shift: B2B-exempt customers reduce effective rate; international shifts change blend.
  2. Product-mix shift: reduced-rate categories (children’s clothing, books in some jurisdictions) reduce effective rate.
  3. Tax-engine misconfiguration: a new product type added without proper VAT classification.
Stable rates are healthy; large drifts deserve investigation. Should I rely on this card for VAT returns? No. Treat as a sanity check. For HMRC / IRS submissions, use Shopify’s Taxes report (which adjusts for refunds and breaks by rate / region) and your accounting record. This card is for monitoring; not for filing. Why does Shopify Tax engine matter? Different engines compute tax differently. Avalara is the most sophisticated for complex multi-state US or international, but costs subscription fees. Shopify Tax is included; sufficient for most. TaxJar is similar to Avalara, cheaper. Don’t underestimate the implementation work in switching engines. My multi-currency store, can I split by currency? Not directly on this card. Filter the underlying orders by presentment currency in Shopify Admin for per-currency tax breakdown. Subscription store: do recurring billings show tax? Yes. Each subscription billing creates its own tax line. Subscription brands see steady tax flows. Action playbook for using Total Tax:
  1. Monthly compliance reconciliation: total here vs accounting closing balance. Match within rounding.
  2. Effective-rate trend monitoring: stable rate is healthy; sudden shifts deserve investigation.
  3. VAT-registration threshold: small UK stores approaching £85k threshold need this card to confirm correct configuration once registered.
  4. Tax-engine audit: spot-check by manually summing order-level totalTax for a single day; should match this card’s daily aggregate.
  5. Quarterly VAT-return preparation: 90D total here = 1 quarter of gross VAT. Subtract refund-tax to estimate net liability.

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Tracked live in Vortex IQ Nerve Centre

Total Tax Collected is one of hundreds of KPI pulses Vortex IQ tracks across Shopify and 70+ other ecommerce connectors. Nerve Centre runs the detection layer; Vortex Mind investigates the cause when something moves; Ask Viq lets you interrogate any number in plain English. Start for free or book a demo to see this metric running on your own data.