Sensitive tax data stays in your browser workspace while you map, preview, and export

Secure Bulk Tax Form Filler from Excel & SheetsSecure Tax Automation

Tax FillerAutomate your tax season with zero data risk. Securely map sensitive data (SSN, EIN, Income) from your spreadsheet to official IRS PDF forms. Our local-first engine keeps the filling workflow in your browser and avoids storing imported tax data as account data by default.

Designed for CPAs, Tax Professionals, and Business Owners handling sensitive PII data.

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PDF Mail Merge

Automatically fill PDF forms with data from Excel or Google Sheets, 100% locally.

Local-first workspace for PDFs and spreadsheet data.
1

Data Source

Spreadsheet or Google Sheets

Drop CSV / XLSX here

or click to choose from your device

2

PDF Template

Fillable PDF form

Drop PDF here

or click to choose from your device

Continue Or Explore

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Recent Exports
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Built for High-Stakes Tax Filings

Browser-Only Processing

Tax form filling runs in your browser session rather than through a hosted PDF editor.

Official IRS Field Support

Optimized for complex IRS forms including W-9, 1099-NEC, 1099-MISC, and Form 1040 schedules.

Boolean Radio/Checkbox Logic

Intelligently map tax entity types (C-Corp, S-Corp, Individual) to the corresponding PDF radio buttons based on your data.

Reusable PDF Output

Generate filled PDFs you can review, archive, print, or pass into your filing workflow.

Secure ZIP Export

Export hundreds of filled tax forms into a single, locally-generated ZIP archive with custom candidate/business names.

No Default Storage of Imported Rows

We do not keep imported spreadsheet rows as account data by default, which helps teams handle PII with tighter internal controls.

Tax Form Workflow at Scale

Use a repeatable spreadsheet-to-tax-form process instead of retyping the same values into every PDF.

Batch ready Generate many filled forms from one spreadsheet

Batch ready

Generate many filled forms from one spreadsheet

Local-first Browser-Based Form Filling

Local-first

Browser-Based Form Filling

No default storage of imported tax rows as account data

No default storage

of imported tax rows as account data

Trusted by Accounting Professionals

How CPAs and business owners are surviving tax season.

The local-first architecture is the only reason our firm approved this tool. We can process 1099s for 200+ clients without risk of data leaks.

Linda Thompson, CPA, Senior Partner

Linda Thompson

CPA, Senior Partner

Filling out W-9s for all our contractors used to be a week-long headache. Now it's a 10-minute task from my Google Sheets list.

Marcus Aurelius, Small Business Owner

Marcus Aurelius

Small Business Owner

The smart field detection is surprisingly accurate. It saved me hours of manual mapping for complex Form 1040 schedules.

Sarah Connor, Tax Consultant

Sarah Connor

Tax Consultant

Tax Professional's FAQ







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Bulk Tax Form Filler: Batch Populate W-9, 1099, 1040 from Excel