Tax Planning
India Tax Planning: Transition from Old to New Tax Regime under Income-tax Act, 2025
With the Income-tax Act, 2025 fully in force, individuals and entities face key choices: opt for new regime, understand disclosure obligations, and manage compliance under simplified rules.
By NomadicTax Research Team • 5-8 min read • September 14, 2026
## What Has Changed & Why It Matters
The **Income-tax Act, 1961** was repealed as of **April 1, 2026**, and replaced by the **Income-tax Act, 2025**. Key intent: simplify structure, reduce number of forms and rules. New “tax year” concept replaces “previous year/assessment year” model. Reductions in number of forms and rules reflect government’s commitment to easier compliance. ([incometax.gov.in](https://www.incometax.gov.in/iec/foportal/help/all-topics/e-filing-services/objective-and-scope-new-act?utm_source=openai))
## Choosing Old vs New Tax Regime
Even under the new Act, taxpayers can **opt between regimes**: the new regime is **default**, but those who benefit from deductions or exemptions may choose the old regime. Opt-out must be done via ITR on or before due date. ([incometax.gov.in](https://www.incometax.gov.in/iec/foportal/help/non-company/return-applicable-0?utm_source=openai))
### Example:
Priya, a salaried individual with significant interest income, home loan interest, and deductions under sections 80C/80D, may find old tax regime better; whereas Raj, freelance contractor with minimal deductions, may prefer simpler new regime.
## New Requirements & Disclosures
- **Foreign Assets of Small Taxpayers Disclosure Scheme (FADS), 2026** allows disclosure of certain undisclosed foreign income/assets as a one-time opportunity. ([incometax.gov.in](https://www.incometax.gov.in/iec/foportal/?mobile-app=1&utm_source=openai))
- New **forms** and new **rules** (Income-tax Rules, 2026) are effective from April 1, 2026, including updated ITR-3 etc. ([incometax.gov.in](https://www.incometax.gov.in/iec/foportal/latest-news?page=%2C4&year=2026&utm_source=openai))
- Existing PAN/TAN remain valid; new forms apply only for new applications post-April 1. ([incometax.gov.in](https://www.incometax.gov.in/iec/foportal/help/all-topics/e-filing-services/income-tax-forms?mobile-app=1&utm_source=openai))
## Compliance Strategy
- Compute tax liability under both regimes before filing.
- Retain documents enabling deduction claims (e.g. investments under old regime), even if temporarily under new.
- Use checklist for filing: eligibility, correct ITR form, new challans. ([incometax.gov.in](https://www.incometax.gov.in/iec/foportal/latest-news?page=%2C4&year=2026&utm_source=openai))
### Common Mistakes to Avoid
- Assuming old deductions cannot be claimed if you fall out of old regime eligibility.
- Missing deadlines or using incorrect forms statutorily substituted under Rules 2026. For instance, ITR-3 updated under Fourth Amendment Rules, 2026. ([incometax.gov.in](https://www.incometax.gov.in/iec/foportal/sites/default/files/2026-04/Notification_No_47_2026.pdf?utm_source=openai))
- Failing to disclose foreign assets or income that exceed scheme thresholds.
## Action Plan
- By end of tax year, list all income sources, debts, investments.
- Estimate tax under both regimes to decide which regime to pick.
- If needed, prepare to use FADS 2026.
- File ITR by due date; use new forms and new payment challans correctly.
With thoughtful planning and understanding of the new law’s mechanics, taxpayers can avoid overpaying and coordinate compliance smoothly. Author: NomadicTax Research Team • ReadTime: 5-8 min