Income Tax Forms Changing from 1 April 2026 – What You Need to Know (Simple Guide)

01.04.26 06:33 AM - Comment(s) - By RB Associates and Tax Matters

The Indian Income Tax system is getting a major update! From 1st April 2026, a new law called the Income-tax Act, 2025 will come into effect.

One of the biggest changes? 👉 Income tax forms are being renamed and restructured.

Don’t worry — this blog explains everything in very simple language.


🔍 What Exactly is Changing?

Under the new law:

  • Old forms under Income-tax Act, 1961 will be replaced
  • Forms will have new numbers and structure
  • Same purpose, but different form names

👉 Example:

  • Old Form 15G / 15H → New Form 121
  • Old Form 10A → New Form 104

📄 This is clearly shown in the mapping guide 


💡 Why Did Government Change the Forms?

The goal is simple:

✔ Make tax laws more organized
✔ Remove confusion in sections and forms
✔ Align forms with the new Income-tax Act, 2025


🧾 How Will You See Forms on Income Tax Portal?

When you log in to the income tax portal, forms will be divided into 3 categories:

  1. Forms as per Income Tax Act 2025 (New forms)
  2. Forms as per Income Tax Act 1961 (Old forms)
  3. Forms as per Other Acts

👉 You must select the correct tab depending on the applicable law 


📊 Important Form Changes (Easy Examples)

Here are some commonly used forms and their new numbers:

Old Form (1961)New Form (2025)Purpose
15G / 15H121No TDS declaration
10A104Trust registration
10AB105NGO approval
15CA145Foreign payment declaration
15CB146CA certificate for foreign payments
26QB / QC / QD141TDS payment form

👉 These mappings are taken from the official guide 


🏢 What About Businesses & Professionals?

If you are:

  • Business owner
  • Chartered Accountant
  • Tax consultant
  • Company

👉 You will see changes in:

  • Advance Pricing Agreement (APA) forms
  • TDS/TCS forms
  • International transaction forms
  • Trust & NGO registration forms

Example:

  • APA Application → New Form 51
  • APA Renewal → New Form 54 (newly introduced)

🌍 Special Forms (Advanced Cases)

Some forms are related to:

  • International Financial Services Centre (IFSC)
  • Aircraft & ship leasing business
  • Pension funds & mutual funds

These are mostly used by large companies and institutions


⚠️ Important Points to Remember

✔ Old forms will not disappear immediately
✔ Both old & new forms may exist during transition
✔ Always check correct form number before filing
✔ Wrong form = rejection or delay


🧠 Simple Conclusion

👉 Nothing is changing in your tax liability
👉 Only form numbers and structure are changing

So,

✅ Don’t panic
✅ Just use the correct form
✅ Take help if confused


🤝 Need Help?

If you are confused about:

  • Which form to use
  • Filing income tax return
  • TDS / GST / business compliance

👉 Contact us at RB Associates & Tax Matters
We will guide you step-by-step.


RB Associates and Tax Matters