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Accounting and finance

Connect Bill to any app with two-way sync.

Two-way sync Bill across all your CRMs, databases, data warehouses, EDI systems, and AI tools, with custom workflows tailored to your data.

  • 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 Matillion
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Migrated from Fivetran
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Migrated from Celigo
Object catalog

What Stacksync syncs in Bill.

These objects sync between Bill and any connected system, with field-level mapping and conflict resolution. Custom fields are picked up from the live schema where Bill exposes them.

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.
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.
Invoices
Accounts-receivable invoices sent to customers; created and read via /v3/invoices to keep billing status aligned with the ERP or CRM.
Customers
AR customer master records; mapped to customer/account records in a CRM or ERP so finance and sales share one view.
Payments
Outgoing vendor payments and received customer payments; read for reconciliation and created to schedule bill pay.
Chart of Accounts
GL accounts used to code bills and invoices; typically mastered in the accounting system and written into BILL for consistent coding.
Bank Accounts
Funding and deposit accounts; read to reconcile payments and posted transactions against the ledger.
Vendor Credits and Credit Memos
AP and AR adjustments applied against bills and invoices; synced so balances stay accurate on both sides.
API surface

How Stacksync connects to Bill.

The connector runs on Bill's native API. Stacksync manages authentication, rate limits, retries, and schema changes so your team does not maintain integration code.

Connection
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
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.

Sync directions

  • Read Supported
  • Write Supported
  • Change data capture Not available
  • Webhooks Supported
What ships with Bill

Connect Bill for flexible, real-time data sync.

Real-time sync, workflow automation, event queues, EDI, and monitoring, for every connection.

Real-time

Two-way sync

Changes in Bill instantly reflect across connected systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever 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 Bill record.

Observability

Monitoring

Track your Bill sync health, view errors, and replay failed events in one click.

Trading partners

EDI

Transform legacy EDI complexity into simple database interactions.

Use cases

What teams run on the Bill connector.

BILL (formerly Bill.com) is the accounts-payable, accounts-receivable, and bill-pay automation platform owned by finance teams — AP/AR managers, controllers, and accounting operations — at SMB and mid-market companies, and often run by outsourced bookkeeping and accounting firms. Vendors, Bills, Customers, Invoices, and Payments live here, along with approval routing and payment status. It sits between the accounting/ERP system of record and the bank, so finance needs its data mirrored into the GL, the warehouse, and the CRM.

  • AP and AR managers
  • Controllers
  • Accounting and finance operations
  • Finance systems / RevOps admins
  • Bookkeepers and accounting firms

  1. Two-way sync Vendors and Bills between BILL and an ERP such as NetSuite or QuickBooks so accounts payable entered in either system stays aligned.

  2. Read approved Bills and their line items into a Postgres warehouse for spend, accrual, and cash-flow reporting without CSV exports.

  3. Sync Customers and Invoices from BILL AR into a CRM or ERP so sales and finance see billing and payment status on the account.

  4. Write Vendors created during ERP onboarding into BILL so new payees are ready to pay without manual re-entry.

  5. Read Payments and payment status into a reconciliation database once bills are marked paid in BILL.

  6. Two-way sync of Vendors and Bills between BILL and an ERP like NetSuite or QuickBooks so AP entered in either system stays aligned, with approval status carried across.

All Bill integrations

Pick the system you need to keep in sync with Bill. Each page covers the sync setup, field mapping, and common workflows for that pair.

CRM · 41

ERP · 37

Database · 49

Data warehouse · 28

Business productivity · 37

Accounting and finance · 16

How it works

Set up Bill in minutes, without APIs.

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.

  1. 01

    Connect your apps

    Authenticate Bill with its native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.

    • OAuth 2.0
    • SSH tunnel
    • VPC peering
    Bill connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the Bill objects to sync — Stacksync auto-detects the schema, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.

    • Standard objects
    • Custom objects
    • Auto-schema
    objects · Bill
    Customers 12,480
    Sales Orders 8,213
    Invoices 5,902
    Items 1,344
  3. 03

    Map fields

    Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.

    • Auto-map
    • Type casting
    • Transforms
    Bill database
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

Bill connector FAQ

What can I sync with the Bill connector?

Bill's core objects — Bills, Vendors, Invoices, Customers and custom fields — can sync with any of 302 other systems. Every integration is real-time and bidirectional, with field-level mapping and conflict resolution.

How does Stacksync connect to Bill?

Via REST/JSON (BILL v3 Connect API), authenticated with 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. Changes are detected as follows — webhook event subscriptions (POST /v3/subscriptions) for bills, vendors, payments, invoices, and bank accounts, with polling on createdTime/updatedTime list filters as the fallback. Stacksync manages rate limits, retries, and schema changes automatically.

Is the Bill connector two-way?

Yes. Changes made in Bill propagate to the connected system and vice versa, in milliseconds. One-way flows are also supported when a direction should stay read-only.

How long does a Bill integration take to set up?

Most Bill integrations go live in minutes: authenticate Bill and the other system, pick objects and fields, and enable the sync. No code and no infrastructure to manage.

Is Bill data secure in transit?

Stacksync is SOC 2 Type II, ISO 27001, GDPR and HIPAA compliant. Bill data is encrypted in transit, and a zero-persistent-storage architecture means records are not retained after a sync operation.

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.

Learn more about security
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:

OAuth 2 SSH Tunnelling SSL certificates IP Whitelisting VPN gateway VPC peering and more
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