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Tax Calculator

Business Deduction Tracker

Track your business expenses and calculate potential tax savings from deductions

Business Information

Qualifying equipment/property placed in service — eligible for 100% bonus depreciation (permanent under OBBBA). Don't double-count purchases already logged as expenses below.

Add Business Expense

Ready to Track?

Add your business information and expenses, then click "Calculate" to see your potential tax savings.

Disclaimer: This tracker provides estimates for educational purposes only. Business deduction rules are complex and vary by business type and situation. Always maintain proper documentation and consult with a qualified tax professional for specific deduction advice and compliance guidance.

Understanding Business Deductions

Every ordinary and necessary expense of running a business is generally deductible, reducing your taxable business income dollar for dollar — but many owners under-track expenses throughout the year and end up missing deductions they were entitled to at tax time.

Beyond everyday expenses, OBBBA made two significant business tax provisions permanent: the Section 199A Qualified Business Income deduction (20% of qualified income for pass-through entities) and 100% bonus depreciation on qualifying equipment — both of which this tracker illustrates alongside your itemized expenses.

How This Calculator Works

Enter your business income, marginal tax bracket, business type, and any qualifying equipment purchases, then log individual expenses by category. The tracker totals your deductions, estimates the resulting tax savings at your marginal rate, illustrates the Section 199A QBI deduction (for pass-through entities) and 100% bonus depreciation where applicable, and breaks your expenses down by category.

Frequently Asked Questions

QBI lets owners of pass-through businesses (sole proprietorships, partnerships, S-corps, and most LLCs) deduct up to 20% of their qualified business income, made permanent by OBBBA. It does not apply to C-corporations, which instead benefit from a flat 21% corporate tax rate. High earners in specified service trades or businesses (law, accounting, consulting, etc.) face wage and UBIA limits not modeled in this simplified illustration.