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Every Tool You Need to
Master Tax Season

Purpose-built tools for CPAs, Enrolled Agents, and Tax Preparers — plus simplified guides for individuals filing their own returns.

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40+ Tax Tools
2026 Tax Year Ready
Free Core Access
IRS Forms Library
Who It's For

Built for Every Tax Professional

From solo practitioners to large firms — and individuals navigating their own returns.

🏛️
CPAs
Advanced tools for complex returns, multi-state filings, business clients, and practice management.
📋
Enrolled Agents
IRS representation tools, audit defense calculators, and penalty abatement resources.
💼
Tax Preparers
Checklists, client organizers, e-filing guides, and quick-reference tax tables.
🏠
Individuals
Simple calculators, deduction finders, W-4 helpers, and plain-English tax explainers.
🏢
Small Businesses
Entity comparison, payroll tax estimators, quarterly payment tools, and depreciation calculators.
The Toolkit

40+ Tax Tools, All in One Place

From simple calculators to advanced professional utilities — always current, always free for core features.

2025 Calendar

Key Tax Deadlines

Never miss a filing deadline again. Updated for 2025 tax year.

Jan 15, 2026
Q4 2025 Estimated Tax Payment
Self-employed, sole proprietors, high-income individuals
2026
Jan 31, 2026
W-2 & 1099 Deadline
Employers must furnish to employees / contractors
2026
Mar 17, 2026
S-Corp & Partnership Returns (Form 1120-S / 1065)
Business entities — 6-month extension available
Upcoming
Apr 15, 2026
Individual Tax Return Deadline (Form 1040)
All individuals — extension to Oct 15 available
Upcoming
Apr 15, 2026
Q1 2026 Estimated Tax Payment
Self-employed and individuals with non-wage income
Upcoming
Jun 16, 2026
Q2 2026 Estimated Tax Payment
Self-employed and individuals with non-wage income
Later
Sep 15, 2026
Q3 2026 Estimated Tax Payment
Self-employed and individuals with non-wage income
Later
Oct 15, 2026
Extended Individual Return Deadline
For those who filed a 6-month extension in April
Later
Library

Reference Resources

Quick-access guides, tables, and references for professionals and individuals.

📊 Reference Table
2025 Federal Tax Brackets
Complete rate tables for all filing statuses, updated for inflation adjustments.
📋 Checklist
New Client Intake Checklist
Comprehensive document checklist to onboard individual and business clients efficiently.
📘 Guide
IRS Penalty Abatement Guide
Step-by-step guide for requesting first-time penalty abatement and reasonable cause relief.
🔢 Reference Table
Standard Mileage Rates 2025
IRS standard mileage rates for business, medical, charity, and military use.
📄 Form Guide
Form W-4 Line-by-Line Guide
Explain W-4 to clients with this plain-English walkthrough for the current form version.
💡 Explainer
QBI Deduction Simplified
Qualified Business Income deduction explained — eligibility, limitations, and pass-through entity rules.
🏢 Guide
S-Corp vs LLC Comparison
Side-by-side entity comparison for tax planning purposes including self-employment tax savings analysis.
📊 Reference Table
Depreciation Quick Reference
MACRS recovery periods, bonus depreciation rates, and Section 179 limits for 2025.
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