Real-time
Two-way sync
Changes in Bill or Twenty CRM instantly reflect in both systems. No stale data, no manual imports.
Accounting and finance ⇄ CRM
Bill to Twenty CRM integration — real-time, two-way sync
Keep Bill and Twenty CRM in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.
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Adopted by fast-scaling companies moving mission-critical data in real time
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Why teams connect Bill and Twenty CRM
Sync customers, invoices, and payment status between Bill and Twenty CRM in real time, so sales sees the money and finance sees the relationship.
Finance and sales describe the same customers in different systems. Twenty CRM knows the relationship: who the contacts are and what is in motion with the account. Bill knows the money: what was invoiced, what was paid, what is overdue. When the two are connected only by exports, each side works partly blind.
Stacksync links Vendor Credits and Credit Memos, Bills, Vendors, Invoices in Bill to Custom Objects, Attachments, Workspace Members, People in Twenty CRM with bi-directional, real-time sync. New customers, updated billing details, invoice status, and payment activity move in whichever direction you configure, field by field, with conflicts resolved by rules you set. The result is one version of each customer, visible from both sides.
Common use cases
- 01 Read Payments and payment status into a reconciliation database once bills are marked paid in BILL.
- 02 Read approved Bills and their line items into a Postgres warehouse for spend, accrual, and cash-flow reporting without CSV exports.
- 03 Mirror support tickets or tasks between Twenty and an operations tool.
- 04 Run a continuous sync from a legacy CRM into Twenty during a migration so both systems stay usable through cutover.
Common sync patterns
Billing detail changes flow back
When a contact or address is corrected in Twenty CRM, Bill gets the update before the next invoice goes out.
Collections with context
Finance sees the account owner and relationship history from Twenty CRM when chasing a balance, and sales sees that the chase is happening.
Where Twenty CRM tracks deals: closed-won creates the finance record
A won opportunity creates or updates the customer in Bill with the right billing details, so invoicing starts without re-keying.
What you can sync between Bill and Twenty CRM
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.
| Bill objects | Twenty CRM objects | How this pairing syncs | |
|---|---|---|---|
| Chart of Accounts GL accounts used to code bills and invoices; typically mastered in the accounting system and written into BILL for consistent coding. | Opportunities Deal records tracked through pipeline stages, synced for forecasting. | Chart of Accounts is specific to Bill and Opportunities to Twenty CRM — each maps to any object or custom field on the other side. | |
| Bank Accounts Funding and deposit accounts; read to reconcile payments and posted transactions against the ledger. | Tasks To-dos linked to people, companies, or deals. | Bank Accounts is specific to Bill and Tasks to Twenty CRM — each maps to any object or custom field on the other side. | |
| Vendor Credits and Credit Memos AP and AR adjustments applied against bills and invoices; synced so balances stay accurate on both sides. | Notes Free-form notes attached to records, useful for mirroring activity from other tools. | Vendor Credits and Credit Memos is specific to Bill and Notes to Twenty CRM — each maps to any object or custom field on the other side. | |
| 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. | Custom Objects User-defined objects created in Twenty's data model settings, addressable through the same APIs as standard objects. | Bills is specific to Bill and Custom Objects to Twenty CRM — each maps to any object or custom field on the other side. | |
| 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. | Attachments Files linked to records. | Vendors is specific to Bill and Attachments to Twenty CRM — each maps to any object or custom field on the other side. | |
| Invoices Accounts-receivable invoices sent to customers; created and read via /v3/invoices to keep billing status aligned with the ERP or CRM. | Workspace Members User accounts used for record ownership and assignment mapping. | Invoices is specific to Bill and Workspace Members to Twenty CRM — each maps to any object or custom field on the other side. |
How changes propagate between Bill and Twenty CRM
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.
Bill Twenty CRM 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 Twenty CRM through its API, with automatic retries and rate-limit backoff.
Twenty CRM Bill Sub-second propagation
DetectionTwenty CRM notifies Stacksync of record changes through webhook events. Webhooks on record create, update, and delete events, or polling on record update timestamps.
DeliveryEach detected change is written to Bill 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.
- Twenty CRM: Subject to the platform's API rate limits; self-hosted deployments control their own limits.
What ships with Bill ⇄ Twenty CRM
Connect Bill and Twenty CRM for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Bill–Twenty CRM connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Bill or Twenty CRM 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 or Twenty CRM record.
Observability
Monitoring
Track your Bill ⇄ Twenty CRM sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Bill and Twenty CRM.
How the Bill and Twenty CRM connectors work
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.
Twenty CRM
- Integration surface
- GraphQL and REST APIs
- Authentication
- API key
- Change detection
- Webhooks on record create, update, and delete events, or polling on record update timestamps
- Capabilities
- read · write · webhooks
- Rate limits
- Subject to the platform's API rate limits; self-hosted deployments control their own limits.
How it works
How to connect Bill to Twenty CRM — 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 Bill and Twenty CRM with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Bill
connected
Twenty CRM
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Bill and Twenty CRM 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 · Bill ⇄ Twenty CRMCustomers 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.
Bill Twenty CRMCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Bill and Twenty CRM integration FAQ
-
Yes. Stacksync provides a managed, real-time two-way integration between Bill and Twenty CRM: authenticate both systems, choose the objects to sync (such as Bill's Chart of Accounts and Bank Accounts), map fields visually, and changes propagate both ways in milliseconds — no code required.
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On the Bill side: Vendor Credits and Credit Memos, Bills, Vendors, Invoices, plus custom fields where Bill exposes them. On the Twenty CRM side: Custom Objects, Attachments, Workspace Members, People. Stacksync auto-detects both schemas and converts types between the two systems.
-
Yes. Each object mapping can be bidirectional or restricted to a single direction (both systems accept writes). Read-only mirrors, one-way pushes, and full two-way sync can be mixed in the same integration.
-
Common patterns for Bill and Twenty CRM: Billing detail changes flow back; Collections with context; Where Twenty CRM tracks deals: closed-won creates the finance record. When a contact or address is corrected in Twenty CRM, Bill gets the update before the next invoice goes out.
-
Bill: 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. Twenty CRM: GraphQL and REST APIs. Authentication: API key. Stacksync manages authentication, retries, and rate limits on both sides.
-
Bill: Rate limits are enforced per developer key: 20,000 requests per hour, login capped at 200 per hour, and a maximum of 3 concurrent requests per developer key per organization. Twenty CRM: Twenty is open source and self-hostable, backed by PostgreSQL, with an object and field model that is metadata-driven and editable from the UI. Stacksync's field mapping accounts for these differences between Bill and Twenty CRM without custom code.
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:
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