What is the difference between 12A and 12AB?

Short answer12A is the old regime; 12AB is the current one. Registrations under 12A/12AA were effectively perpetual; the Finance Act, 2020 replaced them with section 12AB — registration in five-year blocks (three-year provisional for new trusts), renewable, with every legacy registration compulsorily migrated. The exemption itself still flows from sections 11 and 12; 12AB is the gate that keeps it open.

What changed, structurally

Old world: register once under 12A (pre-1996) or 12AA, hold it forever unless cancelled. New world since 1 April 2021: all registrations run through section 12AB with expiry dates — five years for regular registration, three years provisional for trusts yet to commence activities — applied for in Form 10A/10AB (Forms 104/105 from 1 April 2026), granted electronically with a URN. The same overhaul hit 80G approvals, which now also run in renewable blocks, plus the annual 10BD (Form 113 from 1 April 2026)/10BE (Form 114 from 1 April 2026) donation-reporting trail.

The renewal discipline

Renewal applications are due at least six months before expiry (provisional registrations convert within six months of starting activities, or before expiry, whichever is earlier). Diary it like a statutory due date — a lapsed 12AB doesn’t just pause the exemption; it can trigger the section 115TD exit tax on the trust’s accreted income, which is the single most expensive miss in the trust world. Renewals also reopen the trust deed and activities to scrutiny, so keep objects, books and filings consistent throughout the block.

What stays the same

The operating rules of exemption are untouched: 85% application of income, the audit under section 12A(1)(b) read with Rule 17B (Form 10B/10BB (Form 112 from 1 April 2026)), ITR-7 filing, section 13 specified-person discipline, and 115BBC on anonymous donations. If your trust still quotes a 12A certificate from 2004, it has either been migrated — check the URN — or it has silently lapsed; both are worth confirming today. Our 12AB & 80G practice handles migrations, renewals and the annual trail.

Talk to CA Vijay R Singh

Unsure whether your trust’s registration survived the 12AB migration? You can message him directly, or book a short call to talk through your situation.

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This answer is general information, not professional advice. Tax rates, thresholds and forms change with each Finance Act — please confirm the current position for your own facts, or speak to us, before acting.

© 2026 Vijay R Singh & Co., Chartered Accountants · FRN 136869W · ICAI M.No. 153926 · Practising since 2013

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