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35+ Free Professional Tools — 2026

Bookkeeping  &  Finance Tools  that  actually save  you  time

Professional calculators for payroll, taxes, amortization, margins, and PDF tools. Built by a real US bookkeeper with 17+ years experience. Free, forever, no signup.

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2026 tax rates
Browser-based, private
Payroll Tax Estimator — 2026LIVE
Gross Pay$4,800.00
Federal Income Tax−$576.00
Social Security (6.2%)−$297.60
Medicare (1.45%)−$69.60
State Tax (VA 5.75%)−$276.00
NET TAKE-HOME$3,580.80
Break-Even Analysis
Fixed Costs/month$8,000
Contribution Margin$25.00/unit
Break-Even Units320 units
Break-Even Revenue$16,000/mo
35+
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17 yrs
Bookkeeper Experience
2026
Tax Rates Updated
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2026 Tax Rates — Always Current
Every rate is sourced directly from IRS Publication 15, the SSA, and state revenue departments. Rates are updated every January to match the current tax year.
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Built by a Real Bookkeeper
Not a tech company — these tools are built and maintained by a US bookkeeper with 17+ years of hands-on experience with QuickBooks and real small business clients.
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1
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2
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Type your salary, loan amount, costs, or whatever the tool needs.
3
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4
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Guides & How-To Articles

Learn how to use the tools

Step-by-step guides for the finance calculators that can be tricky to use correctly.

All Articles →
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LOAN & MORTGAGE8 min read
How to Read a Loan Amortization Schedule — And Why It Matters
Learn how each payment splits between principal and interest, what odd-days interest means, and how extra payments can save thousands.
Read Guide
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TAXES10 min read
Quarterly Estimated Taxes 2026: The Self-Employed Person's Complete Guide
Who needs to pay, how to calculate, the 4 due dates, and how to avoid underpayment penalties — explained step by step.
Read Guide
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PAYROLL7 min read
1099 vs W-2: What It Really Costs to Hire an Employee vs Contractor
The true cost difference is often 25-35% more for W-2 employees. Here's exactly how to calculate it and make the right hiring decision.
Read Guide
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BOOKKEEPING6 min read
How to Calculate Invoice Late Fees (And Collect Them)
State-by-state rules for late payment interest, how to write your payment terms, and scripts for following up on overdue invoices.
Read Guide
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BOOKKEEPING7 min read
Understanding Your AR Aging Report: What Each Bucket Means
How to read accounts receivable aging, what the 30/60/90 day buckets mean for cash flow, and when to send invoices to collections.
Read Guide
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QUICKBOOKS9 min read
QuickBooks Bank Reconciliation: Step-by-Step Guide for Small Business
How to reconcile your bank account in QuickBooks Online — common errors, what to do when it doesn't balance, and best practices.
Read Guide
From Our Users

Trusted by bookkeepers & business owners

★★★★★
"The payroll tax estimator saved me hours every week. I used to do this in Excel — now it takes 30 seconds and I know it's right."
— Small business owner, Texas
★★★★★
"Finally a loan amortization tool that matches my bank's exact numbers. The odd-days interest feature is something I've never seen anywhere else."
— Bookkeeper, Virginia
★★★★★
"The PDF merge tool alone is worth bookmarking this site. No watermarks, no limits, and it actually works with large files."
— Accountant, California
FAQ

Common questions

Yes, completely. No freemium, no credit card, no "upgrade to unlock." Every tool on this site is free and will stay free. This site is maintained by a working bookkeeper who uses these tools daily and believes everyone deserves access to professional financial calculators.
Yes. Federal rates come from IRS Revenue Procedure 2025-32 (the official 2026 inflation adjustments). The Social Security wage base ($184,500 for 2026) comes from the SSA. State rates are sourced from each state's revenue department. That said, always verify critical figures with a CPA for actual tax filing.
All calculations and PDF operations run entirely in your browser using JavaScript. Nothing is sent to any server. The PDF tools process files locally — your documents never leave your computer. We collect zero personal data from tool usage.
The most common reason is odd-days interest (the stub period between loan origination and first payment) and the day-count convention (Actual/360 vs Actual/365). Our Loan Amortization calculator has a "Capitalize odd-days" toggle, a day-count selector, and a payment override field so you can match your bank's exact TILA figures.
Absolutely — share freely. These tools are designed to be shared. If you're a bookkeeper or accountant, send clients directly to any calculator. No attribution required, though appreciated.
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