The Best QuickBooks Integrations and Apps in 2026
QuickBooks Online is the ledger most small businesses run their money through, but a books app on its own is just data entry — it earns its keep once it’s wired to the tools where your revenue, payroll, and expenses actually happen. Intuit’s App Store lists thousands of apps, with 650 to 750-plus that are actively featured and vetted across payments, e-commerce, payroll, and expense management.
Here are the QuickBooks integrations actually worth setting up, grouped by what they do — and then the way to connect QuickBooks to anything with an API.
Payments: Stripe, Square, PayPal
- Stripe — Syncs card charges, refunds, fees, and payouts into QuickBooks so each deposit reconciles against the right income and processing-fee accounts.
- Square — Pulls in point-of-sale sales, tips, and daily settlements, matching Square deposits to your bank feed automatically.
- PayPal — Imports PayPal transactions and fees, with tools like Synder or the native connector categorizing them instead of dumping one lump deposit.
E-commerce: Shopify, Amazon, WooCommerce
- Shopify Connector — Brings orders, refunds, and payout data into QuickBooks, mapping sales, taxes, and inventory to the correct accounts.
- Amazon (via A2X or Synder) — Breaks Amazon settlements into sales, fees, and reimbursements so your marketplace revenue reconciles cleanly.
- WooCommerce — Syncs WooCommerce orders and refunds into QuickBooks for store owners who run on WordPress.
Payroll: Gusto, QuickBooks Payroll
- Gusto — Maps wages, taxes, and benefits back to the right expense and liability accounts, and handles contractor payments across state lines.
- QuickBooks Payroll — Intuit’s own payroll module posts pay runs directly into the ledger with tax filing built in.
Expenses and accounts payable: Bill.com, Ramp, Expensify
- Bill.com — The market leader for accounts payable; schedules and pays vendor bills, then syncs the payments back to QuickBooks.
- Ramp — Corporate cards plus expense management, auto-categorizing card spend and pushing coded transactions into QuickBooks.
- Expensify — Scans receipts, builds expense reports, and reconciles corporate-card transactions against your books with approval workflows.
CRM: HubSpot, Salesforce
- HubSpot — Syncs customers and deals bi-directionally so sales sees invoice and payment status without leaving the CRM. See our best AI CRM tools roundup for more.
- Salesforce (via QuickBooks connector) — Links opportunities and accounts to QuickBooks invoices for teams that quote and bill from Salesforce.
Time tracking and inventory: QuickBooks Time, Katana
- QuickBooks Time (formerly TSheets) — Feeds tracked hours into payroll and job costing so billable time flows straight to invoices.
- Katana / inventory apps — Sync manufacturing and stock levels with QuickBooks for businesses that carry physical goods.
No-code automation: Zapier and Make
- Zapier and Make — Handy for basic field-mapping between QuickBooks and other apps (new invoice creates a Slack message, new customer adds a row to a sheet). Both are fine for simple triggers, but they copy fields — they don’t reason over the data or make decisions, so anything conditional gets brittle fast.
The AI way to connect QuickBooks to anything: Carly
Carly is an AI executive assistant that connects to 200+ tools — QuickBooks included — and lets you bring your own API key to connect to anything else with a REST API. Where Zapier copies a field, Carly reads what’s actually in your books and acts on it.
- Works 24/7 in the cloud, acting on triggers like a new invoice, an overdue payment, or a big expense the moment they happen.
- Reasons over your QuickBooks data instead of blindly copying fields — it can read an invoice, decide who to chase, and draft the follow-up.
- Ties QuickBooks to the rest of your stack: Gmail and Outlook, your calendar, Slack, and your CRM.
- Builds the whole workflow from a plain-English description — no zap-by-zap wiring.
Carly also integrates with QuickBooks. Carly’s AI agents start at $35/month, with non-AI workflow steps running free and unlimited.
How to connect QuickBooks to a tool with no native integration
- In the Intuit Developer portal, create an app and grab its Client ID and Client secret — QuickBooks authorizes via OAuth 2.0, so you’ll authorize the connection to your company (realm) rather than pasting a static API key.
- Connect it in Carly on the integrations page, authorizing QuickBooks and adding the API key for whatever other tool you want it wired to.
- Describe the workflow in plain English — “when an invoice goes 15 days overdue, email the client and flag it in Slack” — and Carly builds and runs it.
Frequently Asked Questions
Does QuickBooks have integrations?
Yes. QuickBooks Online has one of the largest app ecosystems in accounting, with thousands of apps in Intuit’s App Store and 650 to 750-plus actively featured across payments, e-commerce, payroll, expenses, and CRM.
What is the best QuickBooks integration for automation?
For simple field-copying, Zapier or Make will do. For anything that needs to read your books and make a decision — chasing overdue invoices, flagging unusual expenses, routing bills for approval — an AI assistant like Carly is the better fit because it reasons over the data instead of just moving fields.
How do I connect QuickBooks to an app that isn’t listed?
Because QuickBooks exposes a full OAuth 2.0 REST API, any tool that speaks REST can be wired to it. Authorize QuickBooks in Carly, add the other tool’s API key, and describe the workflow — no custom code needed.
How much does an AI automation for QuickBooks cost?
Carly’s AI agents start at $35/month, and steps in a workflow that don’t use AI run free and unlimited.
More: ChatGPT + QuickBooks · Claude + QuickBooks · Best AI workflow automation tools · Best AI agents for productivity · Best Ramp integrations
Ready to automate your busywork?
Carly schedules, researches, and briefs you—so you can focus on what matters.
See what people say
"Before Carly, I relied on a Calendly link, but the whole process felt impersonal and not very professional. Carly changed that by handling all the back-and-forth, so I'm no longer stuck in endless email threads trying to line up schedules.
Now Carly reaches out to candidates, shares my real-time availability, lets them pick a slot, then sends a Zoom link and drops it straight into my calendar. She sends reminders to both of us before each call, which has significantly reduced no-shows and last-minute confusion.
On top of scheduling, Carly acts like a full executive assistant, sending me my schedule the night before so I can prepare for each call. It reminds me of the old x.ai assistant, but Carly is noticeably smarter, faster, and better suited to my healthcare recruitment business."
