Income Tax Return Terms and Meanings: Complete Glossary
Key Takeaways
- This glossary explains every term you meet while filing an income tax return in plain English, with an example and the common mistake for each.
- The three statements that drive your return are Form 26AS (tax credits), AIS (all reported income), and TIS (pre-fill summary). Always claim TDS from Form 26AS.
- Gross Total Income minus deductions equals Total Income (taxable income); tax and the Section 87A rebate apply to that.
- The four return types confuse most people: Revised (correct an error), Belated (filed late), Updated/ITR-U (voluntary, with extra tax), and the original return.
Who should read this: First-time filers, salaried employees, and anyone decoding the words on the e-filing portal.
Reading time: ~14 minutes · Last updated: 30 June 2026 · Applicable FY: 2025-26 · Applicable AY: 2026-27
Written by the Tax Garden Compliance Team (Kondapur, Hyderabad). Reviewed by a Chartered Accountant on our practice team. References are to the Income-tax Act, 1961 and the Income Tax Department portal. See Sources.
Income tax filing is full of abbreviations and technical words. This glossary defines each term used in income tax returns, in the order you actually meet them: the identifiers, the statements, the income heads, the payment terms, the filing and verification words, and the return and notice types.
Looking for expert help with meaning of every term used in income tax returns in India? The team at Tax Garden, based in Kondapur, Hyderabad, helps Indian SMEs stay compliant end-to-end: filings, notices, and advisory, all in one place.
Identifiers and Numbers
| Term | Meaning | Example / where used | Common mistake |
|---|---|---|---|
| PAN | Permanent Account Number, your 10-character tax identity | Used as login ID and on every return | Quoting an inoperative (Aadhaar-unlinked) PAN |
| TAN | Tax Deduction and Collection Account Number, for deductors | On Form 16/26AS, identifies who deducted TDS | Confusing TAN with PAN |
| Aadhaar | 12-digit UIDAI number, must be linked to PAN | Required for e-verification (Aadhaar OTP) | PAN-Aadhaar not linked, PAN becomes inoperative |
| DSC | Digital Signature Certificate, a token-based e-signature | Used by companies, audit cases to verify returns | Expired DSC at filing time |
| EVC | Electronic Verification Code, a 10-digit OTP-style code | Verifies the return via bank/demat/net banking | Treating filing as complete before e-verifying |
| DIN | Director Identification Number (company directors) / Document Identification Number (on notices) | On notices issued by the Department | Acting on a notice with no valid DIN |
| CIN | Corporate Identity Number (MCA) / Challan Identification Number (tax payment) | On the tax-payment challan receipt | Misquoting the challan CIN when claiming credit |
| GSTIN | Goods and Services Tax Identification Number | Linked in ITR-3/ITR-4 business turnover | Turnover not matching GST returns |
| ARN | Acknowledgement Reference Number | Generated on certain online submissions | Losing the ARN for tracking |
Statements and Documents
| Term | Meaning | Why it matters | Common mistake |
|---|---|---|---|
| Form 26AS | Annual Tax Statement of TDS, TCS, advance tax, and self-assessment tax credits | TDS can be claimed only from Form 26AS | Claiming TDS that is in AIS but not 26AS |
| AIS | Annual Information Statement: a wide record of your reported financial transactions | Cross-check all income before filing | Ignoring AIS entries that contradict the return |
| TIS | Taxpayer Information Summary: an aggregated, pre-fill version of AIS | Feeds the pre-filled return | Blindly trusting pre-fill without checking |
| Form 16 | Employer's TDS certificate for salary | Verify salary and TDS in Schedule S | Filing before receiving Form 16/130 |
| Form 130 | The redesigned salary TDS certificate from FY 2025-26 | Replaces Form 16 going forward | Expecting old Form 16 format |
| Form 16A | TDS certificate for non-salary payments (interest, rent) | Verify TDS on FD interest, rent | Missing FD-interest TDS |
| JSON Utility | The downloadable offline ITR preparation tool | Prepares the return offline, then uploads | Using an outdated utility version |
| XML / JSON | The file formats in which a return is packaged | The return file uploaded to the portal | Uploading a file for the wrong AY |
| ITR-V | The acknowledgement generated after a return is verified | Proof that the return was filed and verified | Treating ITR-V as filing complete without e-verifying |
| Acknowledgement | Confirmation of successful submission and verification | Income proof for loans/visas | Not downloading it for records |
26AS vs AIS vs TIS in one line: 26AS shows tax credits (claim TDS here); AIS shows all reported income (reconcile here); TIS is the aggregated summary that pre-fills your return. Read the full AIS vs Form 26AS vs TIS guide.
Income Heads and Computation Terms
| Term | Meaning | Example | Common mistake |
|---|---|---|---|
| Assessment Year (AY) | The year income is assessed (AY 2026-27 for FY 2025-26) | Selected at the start of filing | Choosing the wrong AY |
| Financial Year (FY) / Previous Year | The year income is earned (1 Apr 2025 – 31 Mar 2026) | The income period reported | Mixing up FY and AY |
| Salary Income | Income from employment (pay, allowances, perquisites) | Reported in Schedule S | Missing previous-employer salary |
| House Property | Income from owned property (rent or deemed rent) | Schedule HP; 24(b) interest deduction | Not declaring a let-out property |
| Business Income | Profits and gains from business or profession | Schedule BP in ITR-3/ITR-4 | Reporting F&O as capital gains |
| Capital Gain | Profit on sale of a capital asset (shares, property) | Schedule CG; 111A/112A/112 rates | Wrong holding-period classification |
| Other Sources | Residual income (interest, dividends, family pension) | Schedule OS | Forgetting savings-bank interest |
| Exempt Income | Income not taxable (e.g., PPF interest, certain allowances) | Reported under exempt-income schedule | Not disclosing exempt income |
| Gross Total Income | Sum of income under all heads before Chapter VI-A deductions | Starting point of tax computation | Confusing it with total income |
| Total Income (Taxable Income) | Gross total income minus deductions | The figure tax is charged on | Applying slab to gross, not total |
| Deduction | Amount reduced from income (e.g., 80C, 80D) | Lowers taxable income (mostly old regime) | Claiming deductions barred in the new regime |
| Rebate (Section 87A) | Tax relief making income up to Rs 12 lakh tax-free (new regime) | Reduces tax, not income | Expecting rebate on capital-gains tax |
| Relief (Section 89/90/91) | Relief for salary arrears (89) or foreign tax (90/91) | Form 10E for arrears | Claiming 89 relief without Form 10E |
Tax Payment and Refund Terms
| Term | Meaning | When it applies | Common mistake |
|---|---|---|---|
| TDS | Tax Deducted at Source by payer | Salary, interest, rent, contracts | Claiming TDS not in 26AS |
| TCS | Tax Collected at Source by seller | Car purchase, foreign remittance | Forgetting TCS credit |
| Advance Tax | Tax paid in instalments during the year | If liability exceeds Rs 10,000 | Missing instalment deadlines |
| Self-Assessment Tax | Balance tax paid before filing | At the time of filing | Filing with tax still payable |
| Refund | Excess tax returned to you | When TDS/advance tax exceeds liability | No pre-validated bank account |
| Demand | Tax the Department says you still owe | Raised via 143(1) or assessment | Ignoring the demand notice |
| Interest (234A/B/C) | Interest for late filing or short advance tax | On unpaid/under-paid tax | Underestimating advance tax |
See advance tax due dates and how to check refund status.
Filing and Verification Terms
| Term | Meaning | Note | Common mistake |
|---|---|---|---|
| e-Filing | Filing the return online on the portal | The only mode for most filers | Using the wrong AY/form |
| Pre-filled Return | Return auto-populated from TIS/26AS/Form 16 | Speeds up filing | Not verifying pre-filled figures |
| Validation | The portal's check for errors before submission | Run before submitting | Ignoring validation warnings |
| Verification / e-Verify | Confirming the return within 30 days | Aadhaar OTP, net banking, EVC, DSC | Missing the 30-day window |
| Condonation of Delay | Permission to verify/file after the deadline | For genuine delays | Assuming it is automatic |
Return Types
| Term | Meaning | Time limit (AY 2026-27) | Common mistake |
|---|---|---|---|
| Original Return | The first return filed for the year | By the due date (31 Jul / 31 Aug 2026) | Missing the due date |
| Revised Return (139(5)) | Corrects an error in a filed return | Up to 31 December 2026 | Revising without keeping records |
| Belated Return (139(4)) | Return filed after the due date | Up to 31 December 2026, with 234F fee | Losing loss carry-forward |
| Updated Return (ITR-U, 139(8A)) | Voluntary return with additional tax | Within the extended window, extra tax | Using ITR-U to claim a refund (not allowed) |
| Defective Return (139(9)) | A return flagged as incomplete/incorrect | Respond within the notice period | Ignoring the defect notice |
Deep dives: belated, revised, and updated returns and the ITR-U updated return guide.
Notices and Compliance Terms
| Term | Meaning | Why it comes | How to respond |
|---|---|---|---|
| Section 143(1) Intimation | Auto-processing result and adjustment | TDS/deduction mismatch | Reconcile, rectify u/s 154 or pay |
| Section 139(9) Notice | Defective return | Wrong form/schedule | Revise within the time allowed |
| Section 142(1) Notice | Inquiry before assessment | Return not filed or details called | Furnish information on the portal |
| Section 143(2) Notice | Scrutiny selection | Detailed review | Respond via the scrutiny process |
| Section 156 Demand | Notice of demand | Tax/interest/penalty payable | Pay or contest within 30 days |
The Eight Terms People Get Wrong
1. Gross Total Income vs Total Income. Add every head = Gross Total Income; subtract eligible deductions = Total Income. Tax and the 87A rebate apply to Total Income, not Gross Total Income.
2. Deduction vs Rebate vs Exemption. A deduction reduces income (80C). A rebate (87A) reduces tax. An exemption keeps income out of the tax net entirely (e.g., HRA portion, PPF interest).
3. AY vs FY. You earn in the Financial Year and are assessed in the next Assessment Year. For income earned in FY 2025-26 you file in AY 2026-27.
4. 26AS vs AIS. Claim TDS only from Form 26AS. AIS is for reconciling income; a TDS entry in AIS but not 26AS cannot be claimed until the deductor corrects its return.
5. Belated vs Revised. A belated return is filed after the due date. A revised return corrects an already-filed return. Both can be filed until 31 December 2026.
6. Revised vs Updated (ITR-U). A revised return corrects errors and can increase a refund. An updated return (ITR-U) is voluntary, requires additional tax, and cannot be used to claim or increase a refund.
7. TDS vs Advance Tax vs Self-Assessment Tax. TDS is deducted by others; advance tax is paid in instalments by you during the year; self-assessment tax is the balance you pay at filing.
8. Verification vs Submission. Submitting the return is not the end. You must e-verify within 30 days, or the return is treated as never filed.
Need Help Decoding Your Return?
If the terms on the portal are still confusing, you do not have to guess. Tax Garden (4th Floor, CWS One, Kondapur, Hyderabad – 500084, Telangana) reconciles your Form 26AS, AIS, and TIS, explains every figure, and files the correct ITR for you. See our tax compliance services and pricing.
Looking for expert help with income tax return filing help and jargon explained in India? The team at Tax Garden, based in Kondapur, Hyderabad, helps Indian SMEs stay compliant end-to-end: filings, notices, and advisory, all in one place.
Related Guides
- ITR-1 Sahaj guide · ITR-2 guide · ITR-3 guide · ITR-4 guide
- AIS vs Form 26AS vs TIS
- Belated, revised, and updated returns
- How to e-verify your ITR
- GST return terms glossary
Frequently Asked Questions
What does AIS mean in income tax?
AIS is the Annual Information Statement, a wide record of your reported financial transactions such as salary, interest, dividends, mutual fund trades, property, and foreign remittances. You use it to cross-check all income before filing your return.
What is the difference between Form 26AS and AIS?
Form 26AS is the Annual Tax Statement of TDS, TCS, and tax credits, and is the only source from which TDS can be claimed. AIS is the broader income record used for reconciliation. If TDS appears in AIS but not 26AS, ask the deductor to correct its TDS return first.
What is TIS?
TIS is the Taxpayer Information Summary, an aggregated and simplified version of AIS that pre-fills your return. Always verify the pre-filled figures against your own records.
What is ITR-V?
ITR-V is the acknowledgement generated after your return is filed and verified. It is your proof of filing and is accepted as income proof for loans and visas.
What is the difference between gross total income and total income?
Gross total income is the sum of income under all heads before Chapter VI-A deductions. Total income (taxable income) is gross total income minus eligible deductions, and tax plus the Section 87A rebate apply to total income.
What is the difference between a deduction and a rebate?
A deduction reduces your taxable income (for example, Section 80C up to Rs 1.5 lakh). A rebate reduces your tax directly (Section 87A makes income up to Rs 12 lakh tax-free under the new regime).
What is the difference between AY and FY?
The financial year (FY) is when you earn income, 1 April to 31 March. The assessment year (AY) is the following year in which that income is assessed. Income of FY 2025-26 is filed in AY 2026-27.
What is the difference between a belated and a revised return?
A belated return is filed after the due date under Section 139(4). A revised return corrects an already-filed return under Section 139(5). For AY 2026-27 both can be filed up to 31 December 2026.
What is an updated return (ITR-U)?
An updated return under Section 139(8A) is a voluntary return filed with additional tax to report missed income. It cannot be used to claim or increase a refund or to reduce tax.
What is a defective return?
A defective return is one the Department flags under Section 139(9) as incomplete or incorrect, often due to the wrong form or a schedule mismatch. You must correct and re-file within the notice period or the return is treated as invalid.
What is EVC?
EVC is the Electronic Verification Code, a code generated through your bank, demat account, or net banking to e-verify your return without a physical signature.
What is a DSC?
A DSC is a Digital Signature Certificate, a token-based electronic signature used to verify returns, mainly by companies and tax-audit cases.
What is advance tax?
Advance tax is income tax paid in instalments during the financial year if your total tax liability for the year exceeds Rs 10,000, instead of paying it all at the end.
What is self-assessment tax?
Self-assessment tax is the balance tax you pay before filing the return, after accounting for TDS, TCS, and advance tax already paid.
What is a demand notice?
A demand notice (Section 156) tells you the tax, interest, or penalty the Department says you still owe. You must pay or contest it within 30 days.
What does it mean to e-verify a return?
E-verifying is confirming you filed the return, done within 30 days using Aadhaar OTP, net banking, EVC, or DSC. Without verification the return is treated as never filed.
What is exempt income?
Exempt income is income that is not taxable, such as PPF interest, agricultural income within limits, and certain allowances. It should still be disclosed in the return.
What is Section 89 relief?
Section 89 relief reduces the extra tax caused by receiving salary arrears in a later year. You must file Form 10E before claiming it in the return.
What is the difference between TDS and TCS?
TDS (Tax Deducted at Source) is tax withheld by the payer, such as your employer or bank. TCS (Tax Collected at Source) is tax collected by a seller, such as on a car purchase or foreign remittance. Both are credited against your liability.
Where can I get help understanding my income tax return in Hyderabad?
Tax Garden, based in Kondapur, Hyderabad, reconciles your statements, explains every term, and files the correct ITR for salaried individuals and businesses across India. See our pricing page.
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Sources
Based on the Income-tax Act, 1961, the Income Tax Department e-filing portal and its glossary and help pages (incometax.gov.in/iec/foportal/), the AIS and TIS documentation, and CBDT instructions for AY 2026-27. Definitions are explained in plain English; confirm specific figures, limits, and dates against the official portal before filing.