How an online store and a physical till end up telling two different stories about the same business is a problem most growing ecommerce brands run into, and this guide is built around closing that gap on the payments side.
An online store sells around the clock, then a physical location opens, and suddenly there are two separate payment flows to track: one from the website checkout, one from the till. If those two payment streams are not reported in one place, reconciling revenue at the end of the month means pulling numbers from two different providers and matching them up by hand. The best POS system closes that gap, so online and in-store payments are accepted, settled and reported through one platform instead of two.
It is worth being precise about what a POS system actually does here. It is not stock management software. Keeping track of how many units are left to sell is the job of the merchant's ecommerce platform (handled by their website developer or a third-party platform like Shopify or WooCommerce) or, for a physical shop, dedicated till or stock software running on a PC or cashier device. A POS system's job is payments: accepting the card or contactless payment in person, and making sure that transaction shows up alongside the online sales in the same reporting dashboard.
This guide explains what actually makes a POS system "the best" for ecommerce businesses that also run a physical store, compares the main options on the market, and shows how best POS system choices connect back to the online store a merchant already runs.
What is a POS system, in plain terms?
A POS system, point of sale system, is the combination of hardware and software a business uses to accept and record a payment at the moment an in-person sale happens. Think of it as the in-store equivalent of a website's checkout page: it takes the card or contactless payment, calculates the total, and sends the transaction data back to a central dashboard for reporting and reconciliation.
For an ecommerce brand with a physical store, "online" is simply the label for payments taken through the website, and "in-store" is the label for payments taken through the POS terminal. A useful analogy is two cashiers working the same shop from different counters. One takes payment at the website checkout, the other takes payment at the physical till, but if their takings are not counted by the same accountant at the end of the day, the business cannot see its real daily revenue in one place. The best POS system is that shared accountant: one dashboard that reports both cashiers' takings together, without taking on the separate job of tracking what is left on the shelves.
Why "best POS system" means something different for ecommerce brands with a shop
Generic POS reviews are often written for businesses that only ever sell in person, with no website to report against. That misses exactly what an ecommerce merchant needs most. For this audience, the best POS system has to handle:
- A single payments dashboard. Finance teams should see online and in-store revenue together, not as two separate exports that need merging by hand.
- Consistent payment methods across channels. Customers should be able to pay the same way, cards, digital wallets, Tap to pay, whether they are checking out online or at the till.
- Fast, flexible in-store checkout. Tap to pay and card acceptance need to be as quick as a one-click online checkout, since a slow till undoes the convenience a good ecommerce brand is known for.
- Clear settlement timing. Online and in-store payments should settle on a predictable schedule, so cash flow planning does not require tracking two different payout calendars.
- No overlap with stock management. The POS system should focus on payment acceptance and reporting, leaving inventory tracking to the ecommerce platform or till software the merchant already uses, so there is no duplicated or conflicting system of record.
This is the real question behind "best POS system" for this audience: not "which till can also manage my stock," but "which system will stop my online store and my shop from reporting revenue like two different businesses."
The best POS system features checklist for ecommerce retailers with a physical store
Before comparing named providers, it helps to have a feature checklist built specifically around this hybrid model, since most generic POS roundups do not address it.
- Unified payments reporting. The best POS system for ecommerce brings in-store and online transactions into one dashboard, so finance teams do not reconcile two separate systems.
- Tap to pay and contactless-first design. In-store checkout should feel as fast as an online one-click purchase, so Tap to pay support is essential, not optional.
- Flexible hardware for different store formats. Whether it is a flagship store, a pop-up, or a market stall extension of the online brand, the POS system should scale to the format.
- Consistent payment methods across channels. Cards, digital wallets and contactless options should be available both online and in-store, so customers are never limited by channel.
- Fast, predictable settlement. Cash flow from in-store sales should settle on a clear schedule, consistent with how the online store already performs.
- Transparent pricing with no surprise fees. Per-transaction rates, hardware costs and any monthly fees should be clear up front, so the shop's margins are not eaten by hidden charges.
- PCI compliance and fraud protection. In-store card-present fraud patterns differ from online fraud, so the POS system needs its own layer of protection, working alongside the ecommerce store's existing fraud checks.
- A clean handoff to specialist tools. The best POS system does one job well, payments, and integrates or coexists cleanly with the separate stock management, accounting or ecommerce platform tools the merchant already relies on, rather than trying to replace them.
How the leading POS systems compare
| Provider | Best for | In-person transaction fee | Monthly fee | Online and in-store payment reporting | Multi-merchant support |
| payabl. in-store | Ecommerce brands adding or already running a physical store, wanting one dashboard for online and in-store payments | Custom pricing, no hidden fees | No mandatory monthly fee | Yes, via payabl.one, one platform for online and in-store payment data | Yes, multiple independent merchants on one device, each paid separately |
| Square | General retail and hospitality with a strong software ecosystem | Around 1.75% | Free plan available, paid tiers extra | Yes, if the merchant also uses Square's own ecommerce platform | Limited, generally one business per account |
| SumUp | Small businesses and sole traders wanting low-cost entry hardware | Around 1.69% (lower on subscription plans) | Optional subscription for lower rates | Limited, basic online payment add-on | No |
| PayPal Point of Sale (formerly Zettle) | Businesses already using PayPal for online payments | Around 2.29% plus a small fixed fee | No monthly fee | Works well if the online store already uses PayPal checkout | No |
The pattern across Square, SumUp and PayPal Point of Sale is that unified payment reporting usually only works smoothly if the merchant also runs their online checkout on that same provider's platform. That is the gap payabl. in-store is positioned to close for brands that want to keep their existing ecommerce platform and stock management setup exactly as it is, while still unifying payment acceptance and reporting across both channels through payabl.one.
Why payabl. fits the online-to-in-person bridge
payabl. connects in-store and online payment processing through one platform, payabl.one, so an ecommerce brand can see website payments and in-store POS transactions in a single dashboard, rather than stitching two providers together at month end. The best POS system for this kind of merchant should not just process a card; it should remove the manual reconciliation between "what the website checkout took" and "what the till took." Stock levels, product catalogues and inventory counts stay exactly where they already are, inside the merchant's ecommerce platform or their in-store till software, since that is a different job to the one a POS system does.
payabl. in-store offers three POS terminal options built for different store formats: the NEXGO N96, an all-in-one Android device with a 6.5 inch screen and long battery life, suited to a flagship store counter; the NEXGO N86, a durable all-in-one terminal with a built-in printer, ideal for a busy retail till; and the NEXGO N6, a pocket-sized terminal designed for business on the go, which suits a market stall, trade show booth, or a founder selling in person for the first time. All three accept Visa, Mastercard and American Express, along with Google Pay, Apple Pay and Samsung Pay, so Tap to pay works out of the box.
Because payabl. supports multiple merchants on one device, a retailer running concessions, shop-in-shop setups, or a small team of independent sellers under one roof can settle each party's takings separately, without each one needing its own hardware and contract.
The best POS system is the one that makes your online and in-store payments act like a single business
Choosing the best POS system for an ecommerce brand with a physical store is not about finding the terminal that claims to do everything. It is about finding the system that stops the website checkout and the shop till from reporting revenue like two separate businesses, while leaving stock management exactly where it belongs, with the merchant's ecommerce platform or till software. A POS system built for unified payment reporting, predictable settlement and Tap to pay will keep a busy Saturday in-store from becoming a reconciliation problem on Monday, and a platform that unifies online and in-store payment data will save a finance team hours every month. The best POS system, in the end, is simply the one that lets online and in-store payments work as one business instead of two.
Frequently asked questions
What is the best POS system for an ecommerce business that also has a physical store?
The best POS system for an ecommerce business with a physical store is one that reports in-store and online payments together in a single dashboard, so finance teams can see total revenue at a glance instead of merging two separate payment reports by hand.
Does a POS system also manage my stock levels?
No. A POS system handles payment acceptance and reporting at the till; stock management is a separate function handled either by the merchant's ecommerce platform (set up by their website developer or a third-party provider) or by dedicated till and stock software running on a PC or cashier device in the physical shop.
How is a POS system for ecommerce retailers different from a standard retail POS system?
A POS system for ecommerce retailers needs to report alongside an existing online payment channel in one dashboard, while a standard retail POS system is often built to operate as a stand-alone payment system with no online channel to report against.
Can a POS system connect to my existing online store's payments?
Yes. The best POS system for ecommerce brands reports in-store transactions alongside online payments in one dashboard, so finance teams do not need to manually merge two separate payment reports, though stock and catalogue data remain managed by the ecommerce platform itself.
What does Tap to pay mean for a retail checkout?
Tap to pay lets customers pay with a contactless card, phone or smartwatch at the till, which keeps in-store checkout as fast as an online one-click purchase, a standard today's shoppers expect from any brand they already buy from online.
How much does a POS system for small business cost?
Costs typically combine a per-transaction processing fee, which commonly ranges from under 2% to around 3% depending on the provider, plus optional hardware and monthly software costs; the best POS system for small business keeps this pricing transparent with no hidden add-ons.
Do I need a separate POS system if I already sell online?
Yes, because an online store's checkout only accepts payments made on the website. Any in-person sales, whether from a flagship store, a pop-up, or a market stall, still need a point of sale system to accept payment, and the strongest setups report that in-store payment data back to the same dashboard used for online sales.