Artha Artha

Statutory Specification • Schedule BP Engine v1.0.0

Regular Business & Professional Tax Methodology

Detailed technical and legal specification governing Commercial P&L reconciliation, Section 32 block depreciation, Section 71(2A) salary loss set-off prohibition, 4-quarter advance tax installments, and Rule 119A interest calculations.

1. Deterministic Execution Guarantee

Tax calculation on Artha is executed entirely through deterministic, compiled TypeScript code in browser memory. AI or LLMs are never used for calculation.

2. Schedule BP Master Reconciliation

Accounting profit is converted to taxable PGBP by adding back book depreciation, income tax, Section 40(a)(ia) 30% TDS defaults, Section 40A(3) cash payments, Section 36(1)(va) late employee PF/ESI, Section 43B unpaid dues, and Section 43B(h) delayed MSME payments.

3. Section 71(2A) Salary Loss Protection

Current-year business losses cannot set off salary income. Business losses can set off other heads and carry forward for 8 years u/s 80.

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