compute_tax
Full FY 2025-26 (AY 2026-27) computation: new/old regime slabs (incl. the senior and super-senior slab sets), standard deduction, 87A rebate (new regime: Rs 60,000 up to Rs 12L with marginal relief, never offsetting 111A/112A tax; old regime: Rs 12,500 on total income up to Rs 5L, no marginal relief
How to use it
compute_tax is exposed by the Itr Agent MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the compute_tax tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.
Install Itr Agent
claude mcp add itr-agent -- npx -y itr-agentOther tools in Itr Agent (11)
Old vs new side by side, recommended regime, savings amount
HRA exemption per Rule 2A, period-wise (least of three limbs; FY 2025-26 metros: Delhi/Mumbai/Kolkata/Chennai) + the 80GG alternative, with its Rs 5,000-per-month cap and the bars under the new regime and alongside HRA
Sections 234A/234B/234C interest with the statutory 12%/36% safe harbors, the s.234B(2) self-assessment payment ladder, and Rule 119A rounding (principal floored to Rs 100, part month = full month). Reports which sections it skipped and why
Ordered, form-specific walkthrough: documents, reconciliation, computation, portal steps schedule by schedule, e-verification
Old-regime deduction checklist with statutory caps (80C, 80CCD(1B), 80D tiers, HRA metros)
Supported fiscal years + AY 2026-27 filing deadlines
Decrypt + parse the AIS JSON export on-device (AES-256-CBC/PBKDF2 with the password derived from PAN + DOB); normalized rows with label-matched amounts/dates/codes
Parse the caret-delimited Form 26AS Text export from TRACES into structured TDS entries
ITR-1/2/3/4 selection with rule-by-rule reasoning and loss-continuity awareness: brought-forward business losses force ITR-3 even with zero current-year business income (Schedule CFL)
Form 16 vs AIS vs 26AS mismatch report -- the checks that pre-empt 143(1)(a) intimations and 139(9) defect notices (TDS over-claim, missing employer, undeclared AIS interest/dividend)
Jun/Sep/Dec/Mar installment plan (15/45/75/100%) with shortfall tracking