Free Tax Calculators by Cardiff Tax Pros

Fast, accurate web tools for individuals and small businesses in North County San Diego and beyond. No signup. Built and maintained by Cardiff Tax Pros.

State Tax Savings Estimator Popular

Compare state income, sales, and property tax impacts for a move or partial-year residency plan. Shareable results to discuss with your CPA.

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Learn more: States with the Lowest Taxes in 2025

Reasonable Compensation Calculator (S-Corp)

Estimate a reasonable salary for S-Corporation owners based on role, industry, and revenue, then model payroll vs. distribution tradeoffs.

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Guide: When S-Corp status makes sense

Why use Cardiff Tax Tools?

Built by a certified tax preparer and bookkeeper (CTEC & NACPB).
Local expertise in Encinitas / North County + online nationwide.
Transparent assumptions and exportable summaries for your records.

Need professional advice?

These tools are for planning only. For personalized guidance, book a consult.

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Frequently Asked Questions

Are these calculators free?: Yes. No login, no email required.
Do the results replace tax advice?: No—they're planning tools. For filings or entity planning, work with Cardiff Tax Pros.
Will you add more tools?: Yes—bookmark this page. We're building more calculators focused on California and small-business owners.