Bloomberg Tax API
Bloomberg Tax is tax intelligence and compliance software for corporate tax departments and accounting firms. An unofficial API lets you programmatically pull legal entities, tax filings and due dates, indirect tax rates, fixed asset registers with multi-book depreciation, provision r
What is Bloomberg Tax?
Bloomberg Tax is a cloud platform for tax professionals that combines authoritative research, global tax intelligence, and software for tax compliance and accounting workflows. Corporate tax teams and firms use Bloomberg Tax to research evolving tax law, manage legal entities and filing calendars, calculate ASC 740 tax provisions, track fixed assets and multi-book depreciation, monitor indirect tax rates, and produce workpapers and journal outputs—backed by current statutes, regulations, and expert analysis.
Core product areas include:
- Tax Research & Intelligence (News, Statutes, Regulations, Portfolios, Country Guides)
- Corporate Tax Provision (ASC 740, ETR, Deferred Tax, Journal Entries)
- Fixed Assets & Depreciation (Multi-Book, Methods/Conventions, Section 179/Bonus)
- Indirect Tax Data (Sales & Use Tax Rates, Jurisdictional Rules)
- Workpapers & Compliance Calendar (Filings, Tasks, Approvals, Evidence)
Common data entities:
- Firms/Companies, Users, Roles/Permissions
- Legal Entities and Consolidation Groups (Identifiers, Jurisdictions, Fiscal Calendars)
- Filings/Returns (Income, Sales/Use, Payroll, Property; Status, Amounts, Due Dates)
- Fixed Assets (Registers, Books, Methods, Conventions, Depreciation, Disposals)
- Tax Rates & Jurisdictions (Codes, Effective Dates, Rules)
- Workpapers, Tasks, Approvals (Artifacts, Status, Audit Trail)
- Provision Inputs/Outputs (Trial Balance Mappings, Differences, Journals)
The Bloomberg Tax Integration Challenge
Tax teams rely on Bloomberg Tax every day, but turning portal-centric workflows into API-driven automation is non-trivial:
- Role-aware access: Research content, compliance data, and calculation modules are gated by licensing and entitlements
- Compliance rigor: Jurisdiction-specific rules, filing calendars, and ASC 740 requirements demand precise modeling and auditability
- Multi-book complexity: Fixed assets span GAAP, tax, IFRS books with different methods and conventions
- Authentication complexity: SSO/MFA and session lifecycles complicate headless automation
- Data spread: Key objects span entities, filings, rates, assets, workpapers, and provisions with cross-module dependencies
How Supergood Creates Bloomberg Tax APIs
Supergood reverse-engineers authenticated browser flows and network interactions to deliver a resilient API endpoint layer for your Bloomberg Tax tenant.
- Handles username/password, SSO/OAuth, and MFA (SMS, email, TOTP) securely
- Maintains session continuity with automated refresh and change detection
- Normalizes responses so you can integrate once and rely on consistent objects across modules
- Aligns with customer entitlements and role-based permissions to ensure compliant access
Getting Started
- Schedule Integration Assessment
Book a 30-minute session to confirm your modules, licensing, and authentication model.
- Supergood Builds and Validates Your API
We deliver a hardened Bloomberg Tax adapter tailored to your workflows and entitlements.
- Deploy with Monitoring
Go live with continuous monitoring and automatic adjustments as Bloomberg Tax evolves.
API Endpoints
Authentication
/sessionsEstablish a session using credentials. Supergood manages MFA (SMS, email, TOTP) and SSO/OAuth when enabled. Returns a short-lived auth token maintained by the platform.
Authentication
/sessions/refreshRefresh an existing token to keep sessions uninterrupted.
Entities
/entitiesList legal entities with identifiers, jurisdictions, and fiscal calendars.
Filings
/filingsList planned, in-progress, filed, or amended returns with amounts and due dates.
Fixed Assets
/fixed-assetsList fixed assets with multi-book depreciation, methods, and conventions.
Tax Provisions
/provisionsCreate an ASC 740 provision calculation for a period and retrieve normalized outputs and journals.
Use Cases
Entity & Filing Data Sync
- Mirror legal entities, jurisdictions, and fiscal calendars into your GRC/audit platform - Keep filing statuses and due dates current for SLA tracking and governance - Normalize identifiers (EIN, registration numbers) to align with ERP/GL and compliance tools
Indirect Tax Rate Monitoring
- Ingest sales/use tax rates by jurisdiction to validate transaction tax calculations - Detect rate changes and propagate updates to billing, e-commerce, and AP systems - Maintain evidence trails with source citations for audit readiness
Fixed Assets & Depreciation
- Sync asset registers and multi-book depreciation for reconciliation and reporting - Validate methods, conventions, bonus/Section 179 usage against tax rules - Generate variance views across GAAP vs tax and tie out to workpapers
ASC 740 Tax Provision & Journal Posting
- Pull provision outputs (ETR, current/deferred tax expense, DTA/DTL) for period close - Export normalized journal entries to NetSuite, SAP, or Oracle ERP - Track approvals and attach supporting documentation to your audit workflows
Technical Specifications
Authentication
Username/password with MFA (SMS, email, TOTP) and SSO/OAuth where enabled; supports service accounts or customer-managed credentials
Response format
JSON with consistent resource schemas and pagination across modules
Rate limits
Tuned for enterprise throughput while honoring customer entitlements and usage controls
Session management
Automatic reauth and cookie/session rotation with health checks
Data freshness
Near real-time retrieval of entities, filings, rates, fixed assets, and provision objects
Security
Encrypted transport, scoped tokens, and audit logging; respects Bloomberg Tax role-based permissions and licensing
Webhooks
Optional asynchronous delivery for long-running workflows (e.g., provision runs, filing status changes)
Latency
Sub-second responses for list/detail queries under normal load
Throughput
Designed for high-volume entity/filing sync and provision/fixed asset processing
Reliability
Retry logic, backoff, and idempotency keys minimize duplicate actions
Adaptation
Continuous monitoring for UI/API changes with rapid adapter updates
Frequently asked questions
Supergood supports workflows across commonly used modules such as Corporate Tax Provision (ASC 740), Fixed Assets/Depreciation (multi-book), Indirect Tax Rates, Entities/Jurisdictions, and Filing Calendars/Workpapers, subject to your licensing and entitlements. We scope coverage during integration assessment.
We support username/password + MFA (SMS, email, TOTP) and can operate behind SSO/OAuth when enabled. Sessions are refreshed automatically with secure challenge handling.
Yes. We normalize provision outputs and journal entries to match your ERP/GL schema and deliver updates via webhooks or polling while complying with rate and permission constraints. We commonly integrate with NetSuite, SAP, and Oracle.
Where licensed, we provide rate tables with effective dates and jurisdiction codes, and include source metadata or citation references for audit trails.