Connecting a point of sale to your WooCommerce store should take an afternoon, not a fortnight. The trouble is that most setup guides stop at "install the plugin" and leave you to discover the gaps — tax rounding, receipt printers, offline mode — at the worst possible moment: with a customer standing in front of you. This checklist walks the whole path in the order that actually matters, so your first in-store sale is boring in the best way.
Before you start
You need three things in place before you touch any POS software: a working WooCommerce store with products and tax rules, an admin login, and a decision about how you'll take payment in person. If your catalog is still half-built, finish that first — a POS only ever reflects what's already in WooCommerce. If you're still choosing a register, our WooCommerce POS overview covers what to look for.
1. Sync your catalog and confirm it matches
The first thing any WooCommerce POS does is pull your products. Let it complete the initial sync, then spot-check ten items against your storefront: price, tax class, stock count, and variations. Pay special attention to products with variable pricing or modifiers — bundles, "add a side", custom engraving — because those are where mismatches hide. If you sell configurable items, confirm your product modifiers render at the register the way they do online.
2. Get taxes and rounding right
Online, a half-cent rounding difference is invisible. At a physical register it produces a receipt that doesn't foot, and customers notice. Set your tax display (inclusive vs. exclusive) to match local norms, then run three test sales at different price points and confirm the totals match what your accountant expects. This is the single most common source of "the POS is wrong" tickets — and it's almost always a WooCommerce tax setting, not the POS.
3. Wire up in-person payments
Decide whether you're taking card payments through a terminal, Tap to Pay on a phone, or cash only to start. Each path has a different setup: a hardware terminal needs pairing, Tap to Pay needs a supported device and a quick capability check. Whichever you choose, run a real one-dollar transaction and then refund it before you open. Our payments guide breaks down the fee structures so you're not surprised by your first statement.
4. Stage your hardware
Receipt printer, cash drawer, barcode scanner — plug each in and test it in isolation before you chain them together. The most common failure is a printer that works in the test page but not in the POS because of a paper-size mismatch. If you haven't bought hardware yet, the hardware catalog lists what's verified to work, and the hardware FAQ answers the compatibility questions that come up most.
5. Set up staff accounts and permissions
Don't let everyone share one login. Create an account per staff member so refunds, voids, and discounts are attributable, and restrict who can do what. This takes five minutes and saves you a forensic afternoon the first time a drawer comes up short.
6. Test what happens when the internet drops
Wi-Fi will fail during your busiest hour at least once. Before you rely on the system, pull the network mid-sale and see how the POS behaves — does it queue the transaction, warn the cashier, or simply freeze? Knowing the answer in advance turns a crisis into a shrug.
7. Do a full dry run
Ring through a complete mock transaction the day before you open: scan an item, apply a discount, add a customer, take payment, print the receipt, then process a return. If all seven steps feel smooth, you're ready. If any one of them makes you hesitate, that's exactly the step to rehearse until it doesn't.
The payoff
A POS that's set up properly disappears into the background — staff ring sales without thinking and inventory stays honest because every in-store sale writes straight back into WooCommerce. That's the whole point: one source of truth for online and in-person, with no nightly reconciliation. When you're ready to see it on your own catalog, book a demo or start with Oliver POS.
