Free tools from Stancil CPAs
Financial Calculators
Quick answers to the money questions our clients ask most, from self-employment tax and S-corps to mortgages and retirement. Updated for 2026 federal and North Carolina tax rules.
- Free, no sign-up
- Instant results
- Built by CPAs
Business owners
For freelancers, 1099 earners and small business owners.
- Self-Employment Tax Calculator How much should I set aside as a 1099 earner? Open calculator →
- S-Corp Tax Savings Calculator Would an S-corp election save me money? Open calculator →
- Quarterly Estimated Tax Calculator How much should my quarterly tax payments be? Open calculator →
- Home Office & Mileage Deduction Calculator How much can I deduct for my home office and car? Open calculator →
Mortgage & real estate
Payments, renting vs. buying, and the tax side of owning a home.
Retirement & savings
Grow your savings and pay less tax doing it.
No calculators match that search. Try another word, or ask a CPA.
Why use a CPA's calculators?
Most online calculators stop at a number. Ours are built by the tax team at Stancil, use current 2026 federal and North Carolina rules, and explain what the result means, so you can get a sense of where you stand before you talk with us about a home, a business structure or retirement savings.
Every result is an estimate based on simplified assumptions. Your real tax depends on details like credits, other income and timing. When the stakes are high, such as electing S-corp status, buying a home or planning withdrawals in retirement, a conversation with a CPA can pay for itself.