WorkIndex/Tax Year vs Assessment Year
Info guide

Tax Year vs Assessment Year
New Act terminology without confusion

Official transition FAQs state that Tax Year replaces the old Previous Year concept from income earned during FY 2026-27 onward. AY 2026-27 returns for FY 2025-26 still use the 1961 Act.

Post Your Requirement - Free
Last fact-checked: 2026-05-26
Official sources reviewed
Duplicate-checked slug
India-specific page
Official fact-check status

Fact-check notes

Last fact-checked: 2026-05-26

Transition rule: AY 2026-27 covers FY 2025-26 and continues under the Income-tax Act, 1961. The Income-tax Act 2025 Tax Year terminology applies for income earned from 1 April 2026 onward.

This page is written from official portal guidance and the supplied Batch 11 brief. Any future-dated form, rule or portal workflow should be verified in the active utility before filing or advising a client.

Info guide

What this covers

Official transition FAQs state that Tax Year replaces the old Previous Year concept from income earned during FY 2026-27 onward. AY 2026-27 returns for FY 2025-26 still use the 1961 Act.

  • Previous Year 2025-26 maps to AY 2026-27 under the old system.
  • Tax Year 2026-27 means income earned from 1 April 2026 to 31 March 2027.
  • Filing still happens after the income year ends.
Use cases

Who this is for

  • Taxpayer confused by portal labels.
  • CA explaining new Act migration.
  • Employer preparing payroll communication.
  • Business mapping TDS certificates.
Records

Documents and data to verify

  • Income year.
  • Assessment year.
  • Return utility selected.
  • Notice or form date.
Care points

Common mistakes to avoid

  • Calling AY 2026-27 a new Act return.
  • Using Tax Year 2026-27 for FY 2025-26 income.
  • Ignoring old Act for appeals/reassessment of earlier years.
  • Mixing old and new section numbers in one filing.
Action

How to proceed

  • Confirm the applicable year, taxpayer type, state, registration status and portal form before acting.
  • Reconcile the official portal data with books, bank statements, certificates, invoices and notices.
  • Prepare a written computation, filing note, document checklist or response with assumptions clearly stated.
  • Download acknowledgements, challans, workings and evidence after filing or submission.
Questions people ask

FAQs

Can WorkIndex help with this?

Yes. Post the facts and documents; relevant experts can quote for filing, advisory, reconciliation, registration, appeal support or ongoing compliance.

Is the page a substitute for professional advice?

No. Use it to prepare. A professional should check the current portal utility, official source and records before filing or taking a tax position.

What should I mention while posting?

Mention the year, state, form, deadline, amount involved, documents available, portal status and whether you need filing, correction, opinion or representation.

Need this reviewed by a specialist?

Share your requirement once and compare relevant WorkIndex experts before hiring.

Post Requirement as Customer