itr-wala
File your Indian income tax return (ITR) from your terminal
...Strict validation cross-checks entered values and rejects malformed or sensitive identifiers. The repository includes golden tests, validator tests, and property-based fuzzing to verify calculation behavior. It can generate a filing pack that maps computed values to the government portal while leaving payment, submission, and e-verification to the user. It targets resident individual returns for AY 2026-27 and explicitly identifies unsupported cases.