Real-time
Two-way sync
Changes in Asana or Bill instantly reflect in both systems. No stale data, no manual imports.
Business productivity ⇄ Accounting and finance
Asana to Bill integration — real-time, two-way sync
Keep Asana 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
Migrated from Heroku Connect
Migrated from Matillion
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Migrated from Fivetran
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Migrated from Celigo
Why teams connect Asana and Bill
Connect the financial records in Bill with the work happening in Asana, so both stay current without exports or copy-paste.
Bill holds the financial truth: who the customers are, what they were billed, what they paid. Asana is where part of the day-to-day work happens, and that work often involves the same customers and transactions. Without a live connection, the two drift apart, and people end up answering questions from stale copies.
Stacksync keeps Vendors, Invoices, Customers, Payments in Bill and Custom fields, Stories, Users, Portfolios in Asana in sync, bi-directionally and in real time. Whatever records Asana keeps and whatever events it produces, the overlap with Bill is mapped field by field, and a change on either side shows up on the other within seconds.
There is no middleware to build, no API rate limits to babysit, and no nightly job that leaves the morning running on yesterday's data.
Common use cases
- 01 Read approved Bills and their line items into a Postgres warehouse for spend, accrual, and cash-flow reporting without CSV exports.
- 02 Sync Customers and Invoices from BILL AR into a CRM or ERP so sales and finance see billing and payment status on the account.
- 03 Sync Stories and completion changes from Asana into a database so downstream dashboards and tools react to project progress in near real time.
- 04 Two-way sync of Tasks and their Custom fields between an Asana project and Postgres so ops teams work in SQL while project owners stay in Asana.
Common sync patterns
Where Asana collects payments or triggers charges: events land in Bill
Payment and charge activity flows into Bill as it happens, so the books reflect reality without manual reconciliation.
Where Asana tracks people or companies: one identity
A customer's details updated in either system update the other, so finance and the rest of the business stop maintaining two versions of the same customer.
Where Asana handles customer conversations: billing context in view
Front-line teams see invoice and payment status from Bill next to the customer they are helping, without logging into the finance system.
What you can sync between Asana 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.
| Asana objects | Bill objects | How this pairing syncs | |
|---|---|---|---|
| Tasks The primary unit of work and main record; created, updated, completed, and deleted via REST and synced two-way. Subtasks are Tasks with a parent reference. | Customers AR customer master records; mapped to customer/account records in a CRM or ERP so finance and sales share one view. | Tasks is specific to Asana and Customers to Bill — each maps to any object or custom field on the other side. | |
| Projects Collections of Tasks with a layout (list, board, timeline, calendar); each project maps to a synced table scope and its custom fields define the mapping. | Payments Outgoing vendor payments and received customer payments; read for reconciliation and created to schedule bill pay. | Projects is specific to Asana and Payments to Bill — each maps to any object or custom field on the other side. | |
| Sections Ordered groupings of Tasks within a project; synced as a grouping attribute or category field on the row. | Chart of Accounts GL accounts used to code bills and invoices; typically mastered in the accounting system and written into BILL for consistent coding. | Sections is specific to Asana and Chart of Accounts to Bill — each maps to any object or custom field on the other side. | |
| Custom fields Typed fields (text, number, enum, multi-enum, date, people) defined at project or workspace level; mapped to database columns, with enum values written by option GID. | Bank Accounts Funding and deposit accounts; read to reconcile payments and posted transactions against the ledger. | Custom fields is specific to Asana and Bank Accounts to Bill — each maps to any object or custom field on the other side. | |
| Stories Comments and activity entries on a Task; read out for history and reporting or written back as comments. | Vendor Credits and Credit Memos AP and AR adjustments applied against bills and invoices; synced so balances stay accurate on both sides. | Stories is specific to Asana and Vendor Credits and Credit Memos to Bill — each maps to any object or custom field on the other side. | |
| Users Members of a workspace or organization referenced by assignee and follower fields; read to resolve GIDs to names and emails. | 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. | Users is specific to Asana and Bills to Bill — each maps to any object or custom field on the other side. |
How changes propagate between Asana 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.
Asana Bill Sub-second propagation
DetectionAsana notifies Stacksync of record changes through webhook events. Resource-scoped webhooks (established with an X-Hook-Secret handshake) POST events on create, change, and delete.
DeliveryEach detected change is written to Bill through its API, with automatic retries and rate-limit backoff.
Bill Asana 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 Asana through its API, with automatic retries and rate-limit backoff.
Rate-limit considerations
- Asana: Per token: 1,500 requests/minute on paid plans, 150/minute on free; the Search API is capped at 60/minute; concurrency caps at 50 GET and 15 write requests. Exceeding a limit returns HTTP 429 with a Retry-After header, and a separate cost-based limiter applies to complex graph traversals.
- 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 Asana ⇄ Bill
Connect Asana and Bill for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Asana–Bill connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Asana 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 Asana or Bill record.
Observability
Monitoring
Track your Asana ⇄ Bill sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Asana and Bill.
How the Asana and Bill connectors work
Asana
- Integration surface
- REST API (app.asana.com/api/1.0, JSON responses), plus resource-scoped Webhooks and a sync-token Events API
- Authentication
- OAuth 2.0 for multi-user apps, Personal Access Tokens (PATs) for single-account use and testing, and organization-scoped Service Accounts (Enterprise) for admin-level access
- Change detection
- Resource-scoped webhooks (established with an X-Hook-Secret handshake) POST events on create, change, and delete; the sync-token Events API returns incremental changes on a task or project when webhooks are not used
- Capabilities
- read · write · webhooks
- Rate limits
- Per token: 1,500 requests/minute on paid plans, 150/minute on free; the Search API is capped at 60/minute; concurrency caps at 50 GET and 15 write requests. Exceeding a limit returns HTTP 429 with a Retry-After header, and a separate cost-based limiter applies to complex graph traversals.
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 Asana 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 Asana 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.
Asana
connected
Bill
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Asana 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 · Asana ⇄ 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.
Asana BillCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Asana and Bill integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Asana and Bill: authenticate both systems, choose the objects to sync (such as Asana's Tasks and Projects), map fields visually, and changes propagate both ways in milliseconds — no code required.
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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 Asana 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 Asana and Bill connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Asana–Bill integration in-house.
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Yes — Stacksync ships production-grade connectors for both Asana 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 Asana: Resource-scoped webhooks (established with an X-Hook-Secret handshake) POST events on create, change, and delete; the sync-token Events API returns incremental changes on a task or project when webhooks are not used. 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.
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On the Bill side: Vendors, Invoices, Customers, Payments, plus custom fields where Bill exposes them. On the Asana side: Custom fields, Stories, Users, Portfolios. Stacksync auto-detects both schemas and converts types between the two systems.
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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