// PRODUCTION SYSTEM ARCHITECTURE
PayDecode
51jurisdictions modelled
United States paycheck and wage calculation engine across 51 jurisdictions.
ARCHETYPE: ENGINEpaydecode.com
Data & Execution Topology
INPUT DISCOVERY
Gross wage + filing status + exemptions + state/locality
PROCESSING CORE
Federal, FICA, State & Local progressive deduction engine
OUTPUT GUARANTEE
Itemized gross-to-net paycheck breakdown with statutory source links
STEP 01Gross Wage Input
STEP 02FICA & Medicare Caps
STEP 03State Tax Schedules
STEP 04Local Withholding
STEP 05Net Pay Result
Key Engineering Decisions
§1Exact integer cents vs. floating-point math
JavaScript floats introduce infamous IEEE-754 precision errors (e.g. 0.1 + 0.2 != 0.3). All intermediate currency math is calculated in scaled integer cents, guaranteeing 100% penny-perfect accuracy across compound brackets.
§2Edge execution over server round-trips
Rather than burdening a central database server with thousands of recalculations per second, statutory tax trees are compiled into pure functional modules that execute directly in the browser and on edge nodes.
§3Statutory citation audit trail
Every single state calculation output links explicitly to the state Department of Revenue statutory bulletin and effective tax year, providing legal defensibility.
Engineering Implementation Breakdown
// frontend
High-density responsive calculation interface with real-time reactive breakdown graphs.
// backend
Deterministic calculation engine running on Cloudflare Edge Workers for sub-20ms latency.
// database
Structured JSON statutory rule tables versioned by legislative tax year.
// deployment
Edge-routed static frontend on Cloudflare CDN with zero server cold starts.
RETURN TO WORKSPACETAJUL ISLAM // DHAKA, BANGLADESH