Utility Suite
In-browser engineering & business utilities
25 production-grade calculators for tax structuring, customs brokerage, logistics packing, and contractor accounting. Built by engineers, verified against statutory source standards, and executed 100% locally in your browser.
Zero Data Transmission
Calculations, files, and payroll logs execute in WebAssembly & JavaScript. Nothing hits a server.
Statutory Grounding
Audited against IRS Pub 15-T, IRC § 179, HMRC IR35, CBP HTS 2026, and AIA G702 standards.
Export-Ready Output
One-click vector PDF certificates, formula-safe CSV audit sheets, and print-ready schedules.
SadaSend — High-Throughput Transactional Email & Native MCP for AI Agents
Need reliable programmatic email dispatch, human-in-the-loop approvals, or a native Model Context Protocol (MCP) server for your LLM agents? SadaSend delivers dedicated IP pools, zero spam tolerance, and verified delivery webhooks.
Paystub & Payroll Generator
Gross-to-net paystub calculations with federal, state, and FICA tax withholding.
Bonus & Supplemental Tax Sizer
Federal 22% flat rate and 50-state supplemental tax withholding calculations.
IRS Mileage Deduction & Travel Log
Standard mileage rates (67¢ & 70¢) vs. actual expenses with contemporaneous trip logging.
Section 179 Vehicle Deduction Sizer
First-year vehicle tax write-offs, GVWR weight tiers, and luxury auto depreciation limits.
S-Corp Reasonable Salary Sizer
Multi-discipline wage benchmarking, FICA savings, and IRS audit defense documentation.
MACRS Depreciation Schedule Generator
IRS Publication 946 asset classes, conventions, and annual tax amortization schedules.
UK HMRC PAYE & IR35 Contractor Salary Sizer
Inside vs. Outside IR35 take-home comparison, Corporation Tax, dividend splits, and permanent salary equivalent.
1099 vs. W-2 Tax & Compensation Sizer
Self-employment tax, Schedule C write-offs, Section 199A QBI, W-2 benefits valuation, and break-even hourly rate.
Section 41 R&D Tax Credit & Payroll Offset
Form 6765 Alternative Simplified Credit (ASC), Section 280C election, and PATH Act $500k payroll tax offset.
UK VAT & Flat Rate Scheme Sizer
Standard 20% VAT, Flat Rate Scheme (FRS) profitability, Limited Cost Trader test, and Construction Domestic Reverse Charge.
US Customs Duty & Landed Cost Sizer
Harmonized Tariff Schedule (HTS), Section 301 China tariffs, MPF & HMF fees, and landed cost pro forma.
Poultry FCR & EPEF Efficiency Sizer
Broiler feed conversion ratio (FCR), European Production Efficiency Factor (EPEF), mortality, and batch margins.
AIA G702 / G703 Progress Billing & Retainage
Schedule of Values (SOV), percentage complete, stored materials, and retainage certification.
Trade & Contractor Quoting Estimator
Multi-tier job costing, labor burden, material scrap, and client-ready proposals.
CBM & Container Loading Optimizer
Cubic meters, volumetric weight, and ISO 20’/40’ container utilization packing.
Tank Volume & Dipstick Chart Maker
Horizontal cylinders with ASME dished heads volume calculus and calibration charts.
NEC Conduit Fill Sizer
NFPA 70 / NEC Chapter 9 conduit fill percentages, wire bundling, and jam ratios.
FDA Nutrition Facts Label Maker
Modernized 21 CFR 101.9 nutrition labels with official rounding and allergen declarations.
E-Commerce Fee & Net Margin Auditor
Amazon FBA, Etsy, and TikTok Shop fees, break-even pricing, and catalog margin analysis.
Commercial Real Estate Cap Rate & NOI
Property valuation, Net Operating Income (NOI), DSCR debt coverage, and investor pitch deck.
Bank Statement & PDF to Excel
Client-side financial table extraction, balance reconciliation, and accounting CSV export.
OFX / QBO to CSV Converter
Banking transaction SGML/XML parser with sign inversion and QuickBooks formatting.
VCF to CSV Contact Cleaner
vCard 2.1/3.0/4.0 contact parsing, phone/email deduplication, and Excel CSV export.
Bulk Barcode to Avery Sheet Maker
Vector Code 128, Code 39, and EAN-13 barcode generation on standard Avery label sheets.
Three-Way Matching & AP Variance Reconciler
Cross-match PO, Goods Receipt Notes (GRN), and Vendor Invoices with tolerance bands, PPV accounts, and audit memo PDF.
Browser sandbox guarantee: All calculation engines, parsers, and PDF generators run strictly on client hardware. No customer data, financial amounts, or proprietary files are sent to DataDaur or third-party servers.
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