Built by Tax Professionals. Not Generic Software Developers.
Seven dedicated verticals covering every service line your firm offers — from individual returns to IRS resolution. Deep workflows, not surface-level checklists.

Drake + ProSeries
Sync
IRS TDS
Integration
50-State
Coverage
Most Firms Cobble Together Disconnected Tools
You deserve a unified tax engine — not a patchwork of spreadsheets and standalone software.
Separate Systems for Each Vertical
Different tools for 1040s, business returns, bookkeeping, payroll, and formations — with no unified view of your firm's workload or client status.
Manual Document Collection & Data Entry
Chasing clients for documents via email, manually entering data into tax software, and checking e-file status one return at a time.
No AI Assistance for Reviews or Strategy
No intelligent review of returns before filing, no automated categorization for bookkeeping, and no AI-powered guidance for IRS resolution cases.
One Engine. Every Tax Service Line.
Each vertical is purpose-built with deep workflows, stage-based pipelines, and AI assistance. Click a tab to explore.
Personal Tax (1040)
End-to-end 1040 workflow from client intake through digital organizers, OCR extraction, preparation, review, and IRS acknowledgment. Work Order Pipeline Management Digital Tax Organizer OCR Extraction (W-2, 1099, K-1) Drake & ProSeries Bidirectional Sync E-File Dashboard & Transmission Tax Acknowledgment Workflows Workpapers Builder & PDF Binders MFJ Validation & Spouse Data Amended Returns (1040-X) Tax Notices Management Year-over-Year Return Comparison
50
States Covered
AI
Powered Reviews
Real-Time
E-File Tracking
Built for Real-World Tax Practices
From sole practitioners to multi-partner firms, the Tax Engine adapts to your workflow.
Solo 1040 Preparer
A sole practitioner processing 200+ 1040s during tax season, using digital organizers, OCR extraction, and Drake sync to maximize throughput without hiring additional staff.
Multi-Partner Business Tax Firm
A multi-partner firm managing 1120/1120S returns with stage-based workflows, staff workload balancing, and real-time pipeline visibility across the entire firm.
Bookkeeping Team
A bookkeeping team automating monthly close for 50+ clients with AI auto-categorization, review queues, and financial insights — reducing manual work by 70%.
Formation Desk
A formation specialist handling multi-state LLC setups with state-specific requirements, document collection tracking, and automated task management across all 50 states.
IRS Resolution Specialist
A resolution specialist managing 20+ OIC cases simultaneously with AI strategy recommendations, TDS transcript retrieval, and a centralized resolution dashboard.
Connected to the Tools You Rely On
The Tax Engine integrates with the industry's most trusted platforms for preparation, filing, and compliance.
Drake Tax Software
Bidirectional sync of client data, return status, and e-file results between ZentroBiz and Drake.
ProSeries / IRS MeF
XML export for ProSeries preparation and direct IRS MeF submission support.
IRS TDS
Automated transcript retrieval from the IRS Transcript Delivery System for resolution cases.
Azure AI (Document OCR)
AI-powered document extraction using Azure Cognitive Services for W-2s, 1099s, K-1s, and receipts.
Cobalt Intelligence (SOS)
Sync Secretary of State data for entity formations, compliance monitoring, and business verification.
ZentroBiz Tax Engine vs. the Old Way
See how a unified tax engine eliminates the need for disconnected tools.
| Capability | Traditional Approach | ZentroBiz Tax Engine |
|---|---|---|
| Tax Preparation | Separate tax software per vertical | Built-in 7-vertical engine |
| Document Collection | Email, fax, and manual uploads | Digital organizer + AI OCR extraction |
| E-File Tracking | Manual checking across systems | Real-time dashboard with auto-status |
| Bookkeeping | Separate tool (QuickBooks, Xero) | AI-powered within the same platform |
| IRS Resolution | Spreadsheets and manual tracking | Full case management + AI strategy |
| Formation | Manual filing per state | 50-state automated workflows |
| Staff Workload | Guesswork and spreadsheets | Real-time capacity dashboard |
See the Tax Engine in Action. Book Your Demo Today.
Join forward-thinking firms that have replaced their disconnected tax tools with one unified engine.
Drake Software® is a registered trademark of Drake Software, LLC. ZentroBiz is not affiliated with, endorsed by, or sponsored by Drake Software. References to Drake Software are for compatibility and integration purposes only.
More in Tax & IRS.
See Tax Engine in your firm.
A 20-minute demo tailored to your workflow, or start a 14-day trial. Submitting a request does not charge a card.
