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The BuyFlow Blog

Practical writing on purchase approvals, spend control, and finance operations for small teams, from the makers of BuyFlow.

October 13, 2026 · BuyFlow Team

One Approval, One Payment: Stop Paying the Same Invoice Twice

The same invoice arrives in the Slack thread, the bills inbox, and a reminder email. QuickBooks and Xero only compare bills to bills. Tie every bill to the Slack approval it belongs to, track billed against approved, record card vs. bill payment, and run a five-minute check before each payment run so a second copy is held, not paid.

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September 18, 2026 · BuyFlow Team

New Vendor Gate: Don't Pay Until Onboarding Clears

A Slack yes on spend is not enough for a brand-new supplier. Here is the minimum onboarding gate — W-9, bank verification, duplicate check, and a second approver — before the first payment leaves QuickBooks or Xero.

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