Real-time
Two-way sync
Changes in Bill or Workday instantly reflect in both systems. No stale data, no manual imports.
Accounting and finance
Bill to Workday integration — real-time, two-way sync
Keep Bill and Workday 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 Workday
Keep the customer, invoice, and payment records that Bill and Workday share consistent in real time, whether the two systems split your finance stack or one is replacing the other.
Two finance systems in one company usually means one of two setups. Either the systems divide the work, with one issuing invoices or serving a business unit while the other holds the books, or one is on its way out and both must stay accurate during the transition. In both cases, the customer, invoice, and payment records the two systems share start to drift the moment updates are keyed twice or moved by hand.
Stacksync syncs Bank Accounts, Vendor Credits and Credit Memos, Bills, Vendors in Bill with Journal Entries, Custom Reports (RaaS), Workers, Organizations in Workday bi-directionally and in real time. A record created or corrected in either system appears in the other within seconds, with field-level mapping and conflict resolution in place of CSV exports and nightly batch jobs.
That matters most at close. When both systems agree on who was billed, what was paid, and what is outstanding, reconciliation stops being a hunt for which copy of the truth is current.
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 Push completed payroll results into a finance system or data warehouse each pay cycle.
- 04 Import journal entries from external billing or expense systems into Workday Financials.
Common sync patterns
Entity or business-unit roll-up
Where each system serves a different entity or unit, sync the shared records so group-level reporting starts from consistent data.
Where Bill issues invoices and Workday holds the books
Invoices and payments recorded on the billing side land in the system of record automatically, so revenue is captured once and correctly.
Parallel run during a migration
When one system is replacing the other, keep both live and matching through the cutover, so no transaction falls between the last export and go-live.
What you can sync between Bill and Workday
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 | Workday objects | How this pairing syncs | |
|---|---|---|---|
| Invoices Accounts-receivable invoices sent to customers; created and read via /v3/invoices to keep billing status aligned with the ERP or CRM. | Customers and Invoices Financials receivables objects synced for billing visibility where Workday Financials is used. | Invoices is specific to Bill and Customers and Invoices to Workday — each maps to any object or custom field on the other side. | |
| Customers AR customer master records; mapped to customer/account records in a CRM or ERP so finance and sales share one view. | Journal Entries Accounting entries imported from external subledgers into Workday Financials. | Customers is specific to Bill and Journal Entries to Workday — each maps to any object or custom field on the other side. | |
| Payments Outgoing vendor payments and received customer payments; read for reconciliation and created to schedule bill pay. | Custom Reports (RaaS) Tenant-defined reports exposed as web service endpoints, often the practical read surface for syncs. | Payments is specific to Bill and Custom Reports (RaaS) to Workday — each maps to any object or custom field on the other side. | |
| Chart of Accounts GL accounts used to code bills and invoices; typically mastered in the accounting system and written into BILL for consistent coding. | Workers The central HCM record covering employment, job, and personal data; the anchor of most syncs. | Chart of Accounts is specific to Bill and Workers to Workday — 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. | Organizations Supervisory and company hierarchies read to drive routing and reporting in other systems. | Bank Accounts is specific to Bill and Organizations to Workday — 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. | Positions Job seats synced with recruiting and planning tools. | Vendor Credits and Credit Memos is specific to Bill and Positions to Workday — each maps to any object or custom field on the other side. |
How changes propagate between Bill and Workday
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 Workday 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 Workday through its API, with automatic retries and rate-limit backoff.
Workday Bill Interval-based propagation
DetectionStacksync polls Workday for changes on an incremental schedule, reading only records changed since the previous pass. Polling, including transaction-log criteria on SOAP operations to fetch objects changed since a given moment.
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 ⇄ Workday
Connect Bill and Workday for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Bill–Workday connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Bill or Workday 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 Workday record.
Observability
Monitoring
Track your Bill ⇄ Workday 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 Workday.
How the Bill and Workday 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.
Workday
- Integration surface
- SOAP Workday Web Services (WWS), a REST API, and Reports-as-a-Service (RaaS) endpoints for custom reports
- Authentication
- OAuth 2.0 for the REST API; integration system users with WS-Security or certificate-based auth for SOAP
- Change detection
- Polling, including transaction-log criteria on SOAP operations to fetch objects changed since a given moment; no general webhook surface
- Capabilities
- read · write
How it works
How to connect Bill to Workday — 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 Workday 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
Workday
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Bill and Workday 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 ⇄ WorkdayCustomers 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 WorkdayCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Bill and Workday integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Bill and Workday: authenticate both systems, choose the objects to sync (such as Bill's Invoices and Customers), 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 Workday side: Journal Entries, Custom Reports (RaaS), Workers, Organizations. 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 Workday: Entity or business-unit roll-up; Where Bill issues invoices and Workday holds the books; Parallel run during a migration. Where each system serves a different entity or unit, sync the shared records so group-level reporting starts from consistent data.
-
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. Workday: SOAP Workday Web Services (WWS), a REST API, and Reports-as-a-Service (RaaS) endpoints for custom reports. Authentication: OAuth 2.0 for the REST API; integration system users with WS-Security or certificate-based auth for SOAP. Stacksync manages authentication, retries, and rate limits on both sides.
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Bill: Webhook event subscriptions are limited to up to 10 per organization and cover bills, vendors, payments, invoices, and bank accounts; Spend & Expense webhooks run only in the production environment. Workday: Any custom report can be exposed as a Reports-as-a-Service endpoint returning JSON or XML, and tenants often use RaaS as the primary extraction surface. Stacksync's field mapping accounts for these differences between Bill and Workday 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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