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PaycheckZip.com vs BuildWire Calc

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

PaycheckZip.com compared with BuildWire Calc
DetailPaycheckZip.com logo PaycheckZip.comBuildWire Calc logo BuildWire Calc
What it does2026 paycheck estimates with line-by-line tax breakdowns for every state Offline calculators for electricians, builders and HVAC technicians
StageNot given Not given
FoundedNot given Not given
Based inNot given US
Pricing modelFree Freemium
PricingNot given Free: nine calculators (voltage drop, Ohm's law, watts to amps, concrete slab, roof pitch, board feet, BTU, CFM, BTU to kW), no time limit. Pro: $9.99 per year or $19.99 lifetime (one payment, no renewal).
Key features
  • Salary and hourly paycheck calculator for all 50 states plus DC
  • Line-by-line tax breakdown with sources cited from IRS and state tables
  • W-4 step-by-step configuration with credits and allowances
  • Overtime, tips, bonuses, and pre-tax deduction inputs
  • Local tax calculations for NYC, Yonkers, and Philadelphia
  • Pay stub verification and comparison tools
  • Comparison of job offers after tax
  • Take-home pay map by state
  • Guides on tax topics and paycheck literacy
  • 43 published test cases verifying calculator accuracy
  • Wire sizing and voltage drop calculations
  • Conduit fill and box fill calculations
  • Offline operation with no network required
  • Transparent calculation steps and NEC warnings
  • Job organization and PDF/CSV export
  • Motor and generator sizing calculators
  • Power and conversion calculators
  • Building calculations for concrete and roof pitch
  • No ads and no account required
  • Private with data staying on device
What makes it different
  • Cites specific IRS and state tax tables for every line, verified October 9, 2026
  • Line-by-line breakdown shows exactly how each tax is calculated
  • Handles complex scenarios including two jobs, W-4 Step 2, multiple employers, and local taxes
  • Results can be shared without exposing personal data in the URL
  • Clear guidance on limitations: estimates, not tax or payroll advice
  • Works completely offline with no network or cellular signal required
  • Private by design with no account, no ads, and calculations never leaving your device
  • Shows exact NEC formulas and calculation steps so you can verify results before fieldwork
  • Over 35 specialized calculators covering electrical, building and HVAC trades
  • Tested code with automated tests against independently worked examples
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet −2 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)013
Referring domains (Majestic)01

4 details filled in for both companies.

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