Built for Tax Professionals

Schedule 1-A
Calculation Tool

Streamline your Schedule 1-A workflow. Calculate Tips, Overtime, Auto Loan Interest, and Senior deductions with a complete audit trail — all in one place.

See Features

By continuing, you acknowledge this tool provides estimates only and all calculations must be verified before filing. Read full disclaimer

100%
Client Privacy
Full
Audit Trail
IRS
Form Aligned
2025
Tax Year

Built for CPAs.
Works for Everyone.

Whether you're a tax professional preparing returns for clients or an individual navigating your own Schedule 1-A, our tool provides the accuracy and transparency you need.

  • Line-by-line calculation trace for review
  • Export to PDF and JSON for documentation
  • Real-time validation and eligibility checks
  • Zero client data stored on servers

For CPAs

Efficient client preparation with full documentation support

For Tax Preparers

Quick estimates and eligibility screening for clients

For Enrolled Agents

Verify calculations before finalizing returns

For Individuals

Understand your potential deductions before filing

Schedule 1-A Deductions

Calculate all four deduction categories with guided inputs and automatic eligibility verification.

Tips

L4-L13

Up to $25,000 deduction for qualifying tip income received after January 2025.

Overtime

L14-L21

Deduct qualifying overtime pay for non-exempt employees working beyond 40 hours.

Auto Loan Interest

L22-L30

Up to $10,000 deduction for interest on US-assembled vehicle loans.

Seniors

L31-L37

Extra $4,000 deduction for taxpayers aged 65+ with Social Security income.

How It Works

A guided workflow that mirrors the official form, with real-time calculations and validation at each step.

1

Enter Client Info

Start with filing status, MAGI, and basic taxpayer information to establish eligibility baselines.

2

Calculate Deductions

Work through each applicable section with guided inputs. Watch the calculation trace update in real-time.

3

Review & Export

Get a complete summary with line-by-line breakdown. Export to PDF or JSON for your records.

Coming Soon

Roadmap

VIN Decoder

Auto-verify US assembly status via NHTSA database. Instant eligibility check for car loan interest deduction.

Tax Saving Estimator

Show clients their potential tax savings in dollars. Compare before/after Schedule 1-A impact on their return.

What-If Scenarios

Model different scenarios side-by-side. See how changes in income or deductions affect the final result.

Eligibility Pre-Screener

Quick 5-question screener to identify which deductions a client may qualify for before starting.

Document Checklist

Before starting, see exactly which documents you need — W-2s, loan statements, or Social Security forms based on your deductions.

Notes & Documents

Attach notes and reference documents to each client calculation. Keep everything organized in one place.

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Client Data Stays on Your Device

All calculations happen right in your browser. Client financial data never leaves the device — nothing is transmitted, stored, or logged on any server.

No account required
No data transmission
100% client-side processing
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Professional Responsibility Notice

This tool is designed to assist tax professionals and individuals in calculating Schedule 1-A deductions. It provides estimates based on the information entered and should be used as a starting point for review, not as final tax advice.

Tax professionals are responsible for exercising their own professional judgment and verifying all calculations against the actual tax return before filing. Individual users should consult with a qualified tax professional for guidance specific to their situation.

By using this tool, you acknowledge that:

  • All calculations must be independently verified before being used in any tax filing
  • The preparer of record bears full responsibility for the accuracy of any filed return
  • This tool does not constitute tax advice and we make no guarantees regarding accuracy
  • We assume no liability for errors, omissions, or any consequences of using this tool

Ready to Streamline Your Workflow?

Start calculating Schedule 1-A deductions with a complete audit trail — free for all users.