Shopify integration services for small business
We connect your Shopify store to your accounting, your marketplaces and the rest of your tools: QuickBooks, Xero, Amazon, eBay, Etsy, HubSpot, Klaviyo. Orders, refunds, payouts and stock move between them on their own, and your team only looks at the exceptions.
A free 30-minute look at your store setup, no obligation. Then a fixed price and a timeline in writing.Where the store and the books stop agreeing
Shopify pays out one lump sum after fees, refunds and chargebacks. Someone spends the weekend matching it to orders before the accountant can close the month.
A standard connector books the sale on the day of the order. A refund two weeks later, a partial payment or a gift card ends up in the wrong period or on the wrong account.
Shopify collects tax per state, or VAT per country. In the books it shows up as a single line, so every quarter someone fixes the return by hand.
The same item is listed on Shopify, Amazon and eBay, each with its own stock count. One channel sells out, the other two keep taking orders, and someone has to write the apology email.
Someone types the order into the CRM, then into the shipping tool, then into an invoice. Every copy is another chance for a typo.
There is an app for the connection, but it skips the one field you need, and its support cannot add it.
Custom integration, or an app set up properly
We start with what already exists. For many pairs there is an app in the Shopify App Store. If it covers your case, we set it up, map the accounts and hand it over. If a ready-made app does the job, we say so and charge for the setup rather than for a build.
A custom integration is for the things an app skips: fees and payouts posted the way your accountant wants them, tax split by state, a shared stock count with a reserve, or an order that has to open a CRM deal with your own fields. We build it on the Shopify API, run it on your account and write down what it does.
Shopify and accounting: QuickBooks or Xero
Every order, refund, partial payment, gift card and discount lands on the right account in the right period. Payouts match against orders on their own, and Shopify fees and card processing fees are booked as expenses, so closing the month becomes a check rather than a reconstruction.
Tax comes out the way the return needs it: by state for US sales tax, by country for VAT. We agree the account mapping with your accountant before anything posts. Then we run a past month through the integration and compare the result with what was booked by hand.
Shopify and marketplaces: Amazon, eBay, Etsy, Walmart
One stock count across every channel. When something sells on Amazon, the quantity on Shopify and eBay drops within minutes, and a reserve you set per item stops the last unit from selling twice. Listings, prices and product changes go out from one place, so nobody retypes them on each marketplace.
Marketplace orders come into Shopify with the channel marked, so fulfilment, returns and reports work the same way for every sale. If the SKUs differ between platforms, we map them once. Variations, bundles and handmade items with options are part of that mapping.
CRM, email, shipping and the rest of the stack
An order can create or update the customer in HubSpot or Salesforce, tag them in Klaviyo or Mailchimp by what they actually bought, and send the shipment to your warehouse or 3PL with the fields they ask for. Tracking and status come back into Shopify, so the customer sees them without anyone forwarding emails.
We connect the tools you already use. That includes open-source systems we set up and adapt ourselves, such as Odoo, ERPNext and EspoCRM, for a store that has outgrown spreadsheets but does not need a paid ERP yet.
A Shopify developer for the parts no app covers
Some connections need code on the Shopify side: a private app that reads orders and writes fulfilments, a webhook that fires when an order is paid, a script that cleans product data before it goes to a marketplace. We build these as small, documented pieces on your own Shopify account, so after handover nothing depends on our access.
We do not build storefronts or themes. The integration work assumes your store already exists and sells. If the store itself is the problem, you need a Shopify design agency, and we will tell you that.
What an integration does not fix
An integration moves data reliably. It does not make bad data good. If products have no SKUs, if one item goes by three names, or if the accounts were never set up for e-commerce, that has to be cleaned up first. We put the cleanup in the scope instead of hoping the sync sorts it out.
Tax decisions stay with your accountant. We post tax the way they tell us to and do not decide where you have to collect it. A marketplace also keeps its own rules. A sync cannot lift an Amazon suspension or get around an eBay listing policy.
From a free review to numbers that match
- 1
A free 30-minute review
Show us the store, the accounting tool and the sales channels. We work out which connections already exist, what an app covers and where the gap is.
- 2
Scope, fixed price and a timeline
You get the list of connections, the field and account mapping and the acceptance checks in writing. App subscriptions and API costs are listed on their own line.
- 3
Build and run a past month through it
A first integration usually takes 2–4 weeks. Before launch we push real orders from a past month through it and compare the result with the books, refunds and fees included.
- 4
Handover and agreed support
You get the access, the mapping document and instructions for failed syncs. We agree who keeps an eye on Shopify and marketplace API changes.
How we handle an integration that cannot fail quietly
A UK rental operator is moving bookings, pricing and cleaning onto one system, one channel at a time. When a channel update fails, an operator gets a visible task instead of a silent gap. A store needs the same thing: a sync that fails has to say so.
$96,000 a year for a PMS that got the money wrong
The off-the-shelf system charged $16 per flat per month. Across a portfolio of 500 flats that is $96,000 a year. And it still calculated owner payouts incorrectly.
Read the full case study →Questions before starting
- What is a Shopify integration?
A Shopify integration connects your Shopify store to another system, such as QuickBooks, Xero, Amazon, eBay or a CRM, so that orders, refunds, payouts, stock and customer details move between them without anyone copying them. It can be an app from the Shopify App Store or a custom build on the Shopify API. Which one fits depends on the fields and rules your business needs.
- Do we need a custom integration or an app from the Shopify App Store?
Start with an app if one covers your case. We set it up and map the accounts. You need a custom integration when the app skips something you rely on: fees and payouts posted the way your accountant wants, sales tax split by state, a stock reserve per item, or CRM fields the app leaves empty. The free review checks the app first and only quotes a build if the gap is real.
- How does a Shopify QuickBooks integration handle refunds, fees and sales tax?
Each refund, partial payment and gift card posts to the period and account it belongs to rather than to the original order date. Shopify Payments fees and processor fees are booked as expenses, and payouts are matched to orders. Sales tax is split by state, or VAT by country for Xero in the UK, so the return can be filed straight from the books. We agree the account mapping with your accountant before anything posts.
- Can you keep stock in sync between Shopify, Amazon, eBay and Etsy?
Yes. All channels share one stock count. A sale on any of them lowers the quantity on the others within minutes, and a reserve per item stops the last unit from selling twice. If SKUs differ between marketplaces, we map them once. Marketplace orders come into Shopify with the channel marked.
- How much does a Shopify integration cost?
The 30-minute review is free and carries no obligation. After it we quote a fixed price and a timeline in writing. Setting up an existing app costs less than a custom build. App subscriptions, API and hosting costs are listed separately. There is no single price, because the field mapping and the number of channels differ from store to store.
- How long does it take?
Setting up an existing app usually takes days. A first custom integration usually takes 2–4 weeks once the scope and access are agreed. Several channels, messy product data or accounts that were never set up for e-commerce add time. The proposal states the schedule and what your team needs to provide.
- What happens when Shopify or a marketplace changes its API?
Shopify retires API versions on a published schedule, and marketplaces change theirs too. The integration runs on your own account, is documented, and logs every failed sync as a visible task. At handover we agree who watches for those changes and what support covers, so an update does not turn into orders quietly going missing.
- Do you work with UK stores?
Yes. For UK stores the accounting side is usually Xero with VAT by country, and the marketplaces are Amazon UK and eBay. The integration work is the same. Tax mapping and currency handling follow what your accountant specifies.
Show us where Shopify and your other tools disagree
Bring one problem. Maybe month end never reconciles, or the same item sold twice, or someone retypes orders by hand. In 30 minutes we can tell you whether an app already covers it, what a custom integration would take and whether it is worth the money.