Real-time
Two-way sync
Changes in Acumatica or Bill instantly reflect in both systems. No stale data, no manual imports.
ERP ⇄ Accounting and finance
Acumatica to Bill integration — real-time, two-way sync
Keep Acumatica and Bill in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.
- SOC 2 and 6 other compliance frameworks
- POC with real engineers in minutes
Adopted by fast-scaling companies moving mission-critical data in real time
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Migrated from MuleSoft
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Migrated from Celigo
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Migrated from Matillion
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Migrated from Fivetran
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Migrated from Celigo
Why teams connect Acumatica and Bill
Keep Bill and Acumatica agreeing on customers, invoices, and balances, whether they split the finance workload or one is replacing the other.
A dedicated finance tool and an ERP end up side by side for practical reasons: a subsidiary runs lighter software than headquarters, billing runs in a specialist system while the enterprise system holds the wider view, or the company is mid-migration and both are live. Whatever the split, the two systems describe overlapping customers and transactions, and that overlap drifts without a live connection.
Stacksync syncs Chart of Accounts, Bank Accounts, Vendor Credits and Credit Memos, Bills in Bill with Stock Items, Shipments, Payments, Journal Transactions in Acumatica in real time and in both directions. You decide which system wins on which field, and every change made in one is reflected in the other within seconds instead of at the next batch run.
Common use cases
- 01 Write Vendors created during ERP onboarding into BILL so new payees are ready to pay without manual re-entry.
- 02 Read Payments and payment status into a reconciliation database once bills are marked paid in BILL.
- 03 Replicate journal transactions and financial data into a SQL database for reporting and consolidation.
- 04 Sync vendor bills from AP automation tools into Acumatica for approval and payment.
Common sync patterns
Where Bill handles billing: invoices land in Acumatica
Invoices and payment activity from the billing side post through to the enterprise system automatically.
Migration without a hard cutover
When one system is replacing the other, run both in parallel with records matching until the switch is complete.
One customer and vendor master
Where both systems keep records of the same organizations, corrections made in either propagate to the other.
What you can sync between Acumatica and Bill
Representative objects on each side — any object or custom field can map to any target. Schemas are auto-detected; types are converted between the two systems.
| Acumatica objects | Bill objects | How this pairing syncs | |
|---|---|---|---|
| Customers AR master data synced with CRMs and billing tools. | Customers AR customer master records; mapped to customer/account records in a CRM or ERP so finance and sales share one view. | Same entity on both sides — records pair one-to-one and field-level changes reconcile in both directions. Custom fields on either side are included in the mapping. | |
| Vendors Supplier records aligned with procurement and AP automation. | Vendors Payee master records; synced two-way with vendor/supplier tables in an ERP or accounting system so new payees don't have to be re-keyed. | Same entity on both sides — records pair one-to-one and field-level changes reconcile in both directions. | |
| Invoices AR and AP billing documents synced for payment tracking and CRM visibility. | Invoices Accounts-receivable invoices sent to customers; created and read via /v3/invoices to keep billing status aligned with the ERP or CRM. | Same entity on both sides — records pair one-to-one and field-level changes reconcile in both directions. Custom fields on either side are included in the mapping. | |
| Payments Customer payment records reconciled against invoices from payment platforms. | Payments Outgoing vendor payments and received customer payments; read for reconciliation and created to schedule bill pay. | Same entity on both sides — records pair one-to-one and field-level changes reconcile in both directions. Custom fields on either side are included in the mapping. | |
| Shipments Fulfillment documents read to update tracking in storefronts and CRMs. | Bills Accounts-payable amounts owed to vendors, with bill line items; read and created via /v3/bills and pulled incrementally by filtering on createdTime/updatedTime. | Shipments is specific to Acumatica and Bills to Bill — each maps to any object or custom field on the other side. | |
| Journal Transactions GL entries replicated into reporting databases. | Chart of Accounts GL accounts used to code bills and invoices; typically mastered in the accounting system and written into BILL for consistent coding. | Journal Transactions is specific to Acumatica and Chart of Accounts to Bill — each maps to any object or custom field on the other side. |
How changes propagate between Acumatica and Bill
Each direction of the sync is driven by what the source system can signal and what the destination accepts — detection, delivery, and expected latency below.
Acumatica Bill Sub-second propagation
DetectionAcumatica notifies Stacksync of record changes through webhook events. Push notifications configurable on data changes, plus polling on LastModifiedDateTime fields.
DeliveryEach detected change is written to Bill through its API, with automatic retries and rate-limit backoff.
Bill Acumatica Sub-second propagation
DetectionBill notifies Stacksync of record changes through webhook events. Webhook event subscriptions (POST /v3/subscriptions) for bills, vendors, payments, invoices, and bank accounts, with polling on.
DeliveryEach detected change is written to Acumatica through its API, with automatic retries and rate-limit backoff.
Rate-limit considerations
- Bill: 20,000 requests per developer key per hour; login (POST /v3/login) capped at 200/hour; maximum 3 concurrent requests per developer key per organization. Spend & Expense API is a separate token at 60 calls/token/minute.
What ships with Acumatica ⇄ Bill
Connect Acumatica and Bill for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Acumatica–Bill connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Acumatica or Bill data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.
At scale
Event queues
Handle millions of events per minute without losing a single Acumatica or Bill record.
Observability
Monitoring
Track your Acumatica ⇄ Bill sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Acumatica and Bill.
How the Acumatica and Bill connectors work
Acumatica
- Integration surface
- Contract-based REST API (JSON over versioned endpoints), plus SOAP web services and OData access to Generic Inquiries
- Authentication
- OAuth 2.0 or cookie-based session login with Acumatica credentials
- Change detection
- Push notifications configurable on data changes, plus polling on LastModifiedDateTime fields
- Capabilities
- read · write · webhooks
Bill
- Integration surface
- REST/JSON (BILL v3 Connect API)
- Authentication
- Session-based: POST /v3/login with username, password, organizationId, and a developer key (devKey) returns a sessionId that is passed with the devKey as headers on every subsequent call; OAuth is available for partner/embedded apps
- Change detection
- Webhook event subscriptions (POST /v3/subscriptions) for bills, vendors, payments, invoices, and bank accounts, with polling on createdTime/updatedTime list filters as the fallback
- Capabilities
- read · write · webhooks
- Rate limits
- 20,000 requests per developer key per hour; login (POST /v3/login) capped at 200/hour; maximum 3 concurrent requests per developer key per organization. Spend & Expense API is a separate token at 60 calls/token/minute.
How it works
How to connect Acumatica to Bill — three steps, no code
Configure and sync within minutes, no code. Whether you sync 50k or 100M+ records, Stacksync handles the queues, infra, and plumbing. Integrations are non-invasive and need zero setup on your systems.
- 01
Connect your apps
Authenticate Acumatica and Bill with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Acumatica
connected
Bill
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Acumatica and Bill objects to sync — Stacksync auto-detects both schemas, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.
objects · Acumatica ⇄ BillCustomers 12,480Sales Orders 8,213Invoices 5,902Items 1,344 - 03
Map fields
Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.
Acumatica BillCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Acumatica and Bill integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Acumatica and Bill: authenticate both systems, choose the objects to sync (such as Acumatica's Customers and Vendors), map fields visually, and changes propagate both ways in milliseconds — no code required.
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Bill: The v3 Connect API is REST/JSON; direct integrations authenticate with a session from POST /v3/login using a developer key, organization ID, username, and password, and the sessionId is scoped to that devKey. Acumatica: The contract-based REST API uses versioned endpoints with a defined entity contract, so integrations pin an endpoint version and remain stable across upgrades. Stacksync's field mapping accounts for these differences between Acumatica and Bill without custom code.
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Stacksync is SOC 2 Type II and ISO 27001 certified with HIPAA BAA support. Data is encrypted in transit, and a zero-persistent-storage architecture means Acumatica and Bill records are not retained after a sync operation.
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Stacksync pricing is usage-based and starts at $1,000/month, including the managed Acumatica and Bill connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Acumatica–Bill integration in-house.
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Yes — Stacksync ships production-grade connectors for both Acumatica and Bill. The connectors handle authentication, schema detection, rate limits, and retries; you configure the sync, and Stacksync operates it.
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Change detection on Acumatica: Push notifications configurable on data changes, plus polling on LastModifiedDateTime fields. On Bill: Webhook event subscriptions (POST /v3/subscriptions) for bills, vendors, payments, invoices, and bank accounts, with polling on createdTime/updatedTime list filters as the fallback. Each detected change propagates to the other side in milliseconds, with field-level conflict resolution and an inspectable event log.
SECURITY
Security teams trust Stacksync
As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.
SOC 2 Type II
ISO 27001
HIPAA BAA
GDPR
CCPA
CSA STAR
DPF US-EU-UK-CH
→ SECURITY WITH BENEFITS
SSO & SCIM
Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.
Alerts
Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.
Secure connection options
Securely connects to your systems with:
Related integrations
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