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Free Interactive Tax Calculators for NJ, NY & PA Small Business Owners

Interactive tax calculators from ProAxis Tax & Accounting Services. No signup. No email required. Run the math yourself, then schedule a consultation if you want a CPA to validate the results for your specific situation.

Why ProAxis Publishes Free Calculators

Tax decisions usually involve a "should I" question that traditional CPA firms answer only after a paid consultation. ProAxis publishes interactive calculators that let you run the math yourself — no signup, no email gate, no sales pitch. The goal is to help small business owners ask better questions of any CPA they hire (whether ProAxis or otherwise).

Each calculator uses current-year tax rates and rules. Each one explicitly notes what it does NOT model (federal income tax bracket impact, state-specific tax, QBI interaction, BAIT eligibility, etc.) so you understand the limits of a generic estimate. For a precise calculation tailored to your specific situation, schedule a free consultation — ProAxis runs the full analysis as part of standard small-business onboarding.

Available Calculators

S-Corp Savings Estimator

See how much self-employment tax you could save by electing S-Corp status. Inputs: net business income, reasonable owner salary. Outputs: estimated annual SE tax savings vs LLC.

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NJ BAIT Savings Calculator

Estimate the federal tax you save by electing the NJ Pass-Through Business Alternative Income Tax to bypass the SALT cap. Inputs: distributive proceeds, federal marginal bracket. Outputs: BAIT owed plus federal deduction value.

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QBI Deduction Calculator

Estimate your 2026 Section 199A qualified business income deduction. Handles below-threshold, phase-in range, and above-threshold cases including SSTB phase-out and W-2 wages limitation.

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Section 179 + Bonus Depreciation Calculator

Estimate your 2026 first-year equipment deduction. Models the inflation-adjusted Section 179 limit ($2,560,000), the phase-out at $4,090,000, and the OBBBA 100% bonus depreciation. Inputs: equipment cost, business income, federal bracket.

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Self-Employment Tax Calculator

Estimate your 2026 federal self-employment tax. Models the $184,500 Social Security wage base, 15.3% SE tax rate, 0.9% Additional Medicare Tax, the 92.35% earnings adjustment, and the half-of-SE-tax federal deduction. All filing statuses.

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Federal Estimated Tax Calculator

Estimate your 2026 federal income tax and plan four quarterly payments to satisfy the IRC §6654 safe harbor. Uses the IRS Rev. Proc. 2025-32 brackets and the 2026 standard deduction. Shows the binding 90%/100%/110% safe harbor.

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1099 vs W-2 Take-Home Calculator

Compare 2026 federal take-home between a W-2 employee and a 1099 contractor at the same gross pay. Models SE tax vs employee FICA, federal income tax brackets, and the rate-equivalent recommendation. Tax-only comparison with classification guidance.

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Bookkeeping Cost Calculator

Estimate your monthly outsourced bookkeeping fee for 2026. Multi-input tool covering revenue tier, transaction volume, payroll, inventory, AR/AP, entity count, and industry. Anchored to ProAxis's published NJ/NY/PA pricing tiers from the canonical pricing pillar.

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Catch-Up Bookkeeping Calculator

Estimate the one-time project cost to bring your books current. Months behind × complexity-adjusted per-month rate, anchored to ProAxis's published $300-$600 per month-of-backlog baseline. Includes optional rush-fee modeling for tight deadlines.

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How to Use ProAxis Calculators Effectively

  1. Run the math with realistic inputs. Don't enter aspirational numbers; enter your current-year actuals. The calculators are designed to give honest estimates, not optimistic projections.
  2. Read the disclaimers carefully. Each calculator explicitly notes what it does NOT include. The S-Corp savings estimator, for example, doesn't model federal income tax bracket changes, NJ Gross Income Tax, QBI deduction interaction, or NJ BAIT eligibility — all of which can dramatically change the actual savings.
  3. Use the result as a conversation starter. If the calculator shows meaningful savings, that's a signal worth discussing with a CPA. If it shows minimal savings, the strategy probably isn't worth the compliance cost for your situation.
  4. Re-run periodically. Tax rates change annually. The calculators update with current-year figures (S-Corp uses 2026 SE tax rates including the $184,500 Social Security wage base).

Planned Future Calculators

The ProAxis calculator series is being built incrementally. Calculators planned for release:

  • 1031 exchange tax-deferral estimator — capital gains deferred + boot tax owed
  • NJ vs NY commuter tax allocation estimator — for Bergen County residents working in NYC

Have a calculator request? Email info@proaxiscpa.com with the subject "Calculator Request."

When a Calculator Is Enough — and When You Need a CPA

A free calculator answers a narrow question: under typical assumptions, what does the math suggest? That answer is useful for triaging a decision before you spend money on a paid consultation. It is not a substitute for the work a CPA does on your actual return.

For an S-Corp election, a calculator can tell you whether the gross self-employment tax savings are large enough to justify a deeper look. It cannot tell you whether your reasonable salary number will hold up under IRS scrutiny, whether the QBI deduction will phase out in your bracket, or whether the NJ BAIT election layers on top to double your savings. Those answers come from a CPA who has read your prior returns, your operating agreement, and your books.

The calculator is also blind to timing. The right tax move at the start of a year is often different from the right move in November, and the right move for a growing business is often different from the right move for a stable one. A CPA looks at where your business is going, not just where it is today, and recommends a strategy that fits the trajectory.

Use the calculator to decide whether a question is worth asking. Use a CPA to get the answer that fits your situation. The two work together. ProAxis runs the precise calculation as part of every small-business onboarding — the calculator is just the starting point.

How ProAxis Builds These Calculators

Every ProAxis calculator follows the same build rules. The math runs entirely in your browser using the current-year federal tax tables and rates. Inputs are never sent to a server, never logged, and never used for marketing. The page does not gate results behind a signup or email field.

Each calculator is reviewed by a licensed CPA before publication and updated when tax law or rates change. The S-Corp savings calculator, for example, applies the 2026 Social Security wage base of $184,500, the 12.4% Social Security rate, the 2.9% Medicare rate, and the 92.35% Schedule SE adjustment. When the wage base or rates change for a new tax year, the calculator is updated and the worked example is rewritten.

Each tool ships with a plain-language disclaimer that lists what the calculator does and does not model. The goal is honest estimation, not optimistic projection. A calculator that overstates savings does the user a disservice — the user makes a decision based on a number that will not hold up on the actual return.

If you find a calculation that looks wrong, email info@proaxiscpa.com with the inputs you used and the result you expected. ProAxis investigates every report and corrects the tool when warranted.

Who Uses ProAxis Tax Calculators

Most visitors fall into one of three groups. Each gets value from the same tool in a different way.

  • Small business owners considering a structure change. Sole proprietors and single-member LLC owners who have heard about the S-Corp election and want to know whether the savings would actually justify the added compliance work in their case. The calculator gives a direct dollar answer in 30 seconds.
  • Existing CPA clients double-checking their own situation. Owners who already work with a CPA but want to sanity-check the math themselves before a planning meeting. Running the numbers in advance leads to sharper questions and better outcomes from the meeting.
  • Owners who do not have a CPA yet. First-time business owners, side-hustlers crossing into full-time self-employment, and recent transplants to NJ, NY, or PA who need a starting point before they hire a firm. The calculator is a low-friction way to begin.

Frequently Asked Questions

Are the ProAxis tax calculators free to use?

Yes. Every ProAxis calculator is free, runs in your browser, and requires no signup or email. Inputs and results stay on your device. The calculators are published as a public service for NJ, NY, and PA small business owners who want to run the math before booking a paid CPA consultation.

How accurate are the ProAxis calculators?

Each calculator uses current-year federal tax rates and rules and produces a directional estimate, not a precise return-ready figure. The S-Corp savings calculator, for example, applies 2026 self-employment tax rates and the $184,500 Social Security wage base. The result is accurate as a planning estimate but does not capture every variable that would appear on a filed tax return.

What do the ProAxis calculators NOT include?

The calculators are focused on a single decision. They do not model federal income tax bracket impact, NJ Gross Income Tax, the QBI deduction, retirement plan contribution capacity, or NJ BAIT eligibility. Any of these can shift the actual savings up or down by thousands of dollars. Each calculator notes its limits in plain language on the page.

When should I use a calculator vs. talking to a CPA?

Use a calculator first to decide whether a strategy is worth investigating. If the estimate shows meaningful savings — for the S-Corp election, typically more than $3,000/year net of compliance costs — book a CPA consultation to validate the numbers for your exact situation. If the estimate shows minimal savings, the strategy probably is not worth the added compliance complexity for your business right now.

Do the ProAxis calculators store my inputs?

No. The calculators run entirely in your browser. Your inputs are not transmitted to ProAxis, are not saved to a server, and are not used for marketing. Closing or refreshing the page clears the inputs. ProAxis cannot see what you entered.

Why would a CPA firm publish free calculators?

ProAxis publishes calculators because most tax-planning conversations start with a basic should-I question that does not need a paid meeting to answer. Free tools help business owners ask sharper questions of any CPA they hire, whether that is ProAxis or another firm. Owners who decide they want a precise analysis usually book a consultation; owners who do not move forward still got real value, and that is fine.

Can I use these calculators if my business is in NY or PA, not NJ?

Yes for the federal portion. The S-Corp savings calculator models federal self-employment tax and federal payroll tax, which apply identically in NY and PA. State income tax differs by state, and the calculator does not model state tax effects. ProAxis serves NJ, NY, and PA business owners and runs the full state-level analysis as part of any consultation.

Want a CPA to Validate Your Calculator Results?

Schedule a free consultation with ProAxis Tax & Accounting Services. ProAxis runs the precise calculation for your specific situation — including all the variables a generic calculator can't capture.