Real-time
Two-way sync
Changes in Bill or Microsoft 365 instantly reflect in both systems. No stale data, no manual imports.
Accounting and finance ⇄ Business productivity
Bill to Microsoft 365 integration — real-time, two-way sync
Keep Bill and Microsoft 365 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 Bill and Microsoft 365
Connect the financial records in Bill with the work happening in Microsoft 365, 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. Microsoft 365 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 Bank Accounts, Vendor Credits and Credit Memos, Bills, Vendors in Bill and Teams, Planner & To Do Tasks, Users, Groups in Microsoft 365 in sync, bi-directionally and in real time. Whatever records Microsoft 365 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 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 calendar events into scheduling or CRM tools so meetings appear on customer timelines.
- 04 Sync SharePoint lists with operational databases so business users edit in SharePoint while systems read SQL.
Common sync patterns
Where Microsoft 365 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 Microsoft 365 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.
Where Microsoft 365 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.
What you can sync between Bill and Microsoft 365
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 | Microsoft 365 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. | Planner & To Do Tasks Task items synced with project and work-management tools. | Chart of Accounts is specific to Bill and Planner & To Do Tasks to Microsoft 365 — 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. | Users Entra ID user accounts synced with HR and identity systems. | Bank Accounts is specific to Bill and Users to Microsoft 365 — 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. | Groups Microsoft 365 and security groups kept aligned with org structure and access rules. | Vendor Credits and Credit Memos is specific to Bill and Groups to Microsoft 365 — 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. | Mail Messages Exchange Online messages read for logging, archiving, or activity capture. | Bills is specific to Bill and Mail Messages to Microsoft 365 — 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. | Calendar Events Events synced with scheduling tools and CRMs for meeting visibility. | Vendors is specific to Bill and Calendar Events to Microsoft 365 — 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. | Contacts Personal and org contacts kept consistent with CRM contact records. | Invoices is specific to Bill and Contacts to Microsoft 365 — each maps to any object or custom field on the other side. |
How changes propagate between Bill and Microsoft 365
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 Microsoft 365 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 Microsoft 365 through its API, with automatic retries and rate-limit backoff.
Microsoft 365 Bill Sub-second propagation
DetectionMicrosoft 365 notifies Stacksync of record changes through webhook events. Graph change notifications (webhooks) plus delta queries for incremental sync.
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.
What ships with Bill ⇄ Microsoft 365
Connect Bill and Microsoft 365 for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Bill–Microsoft 365 connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Bill or Microsoft 365 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 Microsoft 365 record.
Observability
Monitoring
Track your Bill ⇄ Microsoft 365 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 Microsoft 365.
How the Bill and Microsoft 365 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.
Microsoft 365
- Integration surface
- REST API (Microsoft Graph)
- Authentication
- OAuth 2.0 via Microsoft Entra ID, with delegated or application permissions
- Change detection
- Graph change notifications (webhooks) plus delta queries for incremental sync
- Capabilities
- read · write · webhooks
How it works
How to connect Bill to Microsoft 365 — 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 Microsoft 365 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
Microsoft 365
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Bill and Microsoft 365 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 ⇄ Microsoft 365Customers 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 Microsoft 365Company company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Bill and Microsoft 365 integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Bill and Microsoft 365: 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: Bank Accounts, Vendor Credits and Credit Memos, Bills, Vendors, plus custom fields where Bill exposes them. On the Microsoft 365 side: Teams, Planner & To Do Tasks, Users, Groups. Stacksync auto-detects both schemas and converts types between the two systems.
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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.
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Common patterns for Bill and Microsoft 365: Where Microsoft 365 tracks people or companies: one identity; Where Microsoft 365 handles customer conversations: billing context in view; Where Microsoft 365 collects payments or triggers charges: events land in Bill. 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.
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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. Microsoft 365: REST API (Microsoft Graph). Authentication: OAuth 2.0 via Microsoft Entra ID, with delegated or application permissions. Stacksync manages authentication, retries, and rate limits on both sides.
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Bill: BILL exposes separate AP and AR object sets plus a distinct Spend & Expense API that uses its own token and a lower 60-calls-per-minute limit. Microsoft 365: Change notifications can push events for resources such as messages, events, and driveItems, with subscriptions that must be periodically renewed. Stacksync's field mapping accounts for these differences between Bill and Microsoft 365 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:
Related integrations
Every pair below is a real-time, two-way sync. Search all 449 integrations available for Bill and Microsoft 365.
Popular · 7 of 449
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No integrations match .
