Guideline value and stamp duty in Tamil Nadu: how to check before you register

Guideline value is the minimum value the Tamil Nadu government notifies for a property in a given location, and it is the number the sub-registrar computes your stamp duty on. At registration, duty and the registration fee are charged on whichever is higher — the actual sale price stated in your deed, or the notified guideline value for that street, survey number or apartment. You cannot register below the guideline value, and the gap between it and the price you actually pay carries a tax consequence most buyers underestimate. This guide covers what guideline value is, how to check it on the TNREGINET portal by street before you negotiate, the current stamp duty and registration fee, and where the risk sits.

What guideline value is, and how it sets your stamp duty

Guideline value — also called government value — is the state's official floor price for registering a property in a specific area. The Tamil Nadu Registration Department fixes a value for every street, survey number and plot, and revises it from time to time. Other states publish the same thing under different labels: it is the guidance value in Karnataka, the ready reckoner rate in Maharashtra, and the circle rate in Delhi and much of north India. Whatever the name, it does one job — it sets the minimum value on which stamp duty and the registration fee are charged, so the government collects duty on a realistic value even when a sale is under-declared.

The value is location-specific and granular. Guideline value in Tamil Nadu can differ street by street, and a residential rate will differ from a commercial or agricultural rate on the same road. It is published as a rate per square foot or per square metre for land, with a separate building-value calculation for the constructed portion, so the guideline value of a flat combines the undivided land share and the built area.

How to check guideline value on TNREGINET — step by step

You do not need a login to look up a guideline value. The Inspector General of Registration publishes it free through the TNREGINET portal, which covers every sub-registrar office in the state, including all Chennai zones. The lookup is by location, so match the zone, sub-registrar office (SRO), village and street to the property exactly.

1. Open the official portal at tnreginet.gov.in and find the 'Guideline Value' service in the main menu or under Services. No account or login is required.
2. Select the Zone first, then the District where the property is located.
3. Choose the jurisdictional Sub-Registrar Office (SRO) for the property from the dropdown — the seller's earlier registered deed and the encumbrance certificate both state which SRO the property falls under.
4. Select the Village, then enter or select the Street Name. Because guideline value can differ street by street, be precise here.
5. Search. The portal returns the current guideline value for that location — the per-unit rate for residential, commercial and agricultural land — which is the floor your stamp duty is computed on.
6. For a built property, use the portal's building value calculator to work out the constructed-portion value and combine it with the land value for the flat or house.

Stamp duty and registration fee in Tamil Nadu

On a sale or conveyance deed in Tamil Nadu, the two statutory charges at registration are stamp duty and the registration fee, and both are levied on the higher of the declared sale price or the guideline value. As of 2026 the standard rates for a sale deed are:

• Stamp duty — 7% of the higher of sale value or guideline value.
• Registration fee — 4% of the same value. Note that Tamil Nadu's registration fee is higher than most states, where it is commonly 1%.
• Combined, a buyer typically budgets around 11% of the registered value in duty and fee on a standard sale deed, before other conveyancing costs.
• Women concession — from 1 April 2025, the registration fee is reduced to 3% (from 4%) where a woman is the buyer and the property value is up to ten lakh rupees; stamp duty is unchanged.

Different deed types carry different rates — a gift within family, a partition, a release, or a mortgage each has its own duty and fee, and a sale agreement carries only a nominal stamp. The figures above are for the ordinary sale of a completed property. TNREGINET publishes a duty and fee calculator alongside the guideline-value lookup, so a buyer can compute the exact statutory cost on their own value before visiting the sub-registrar office.

Guideline value vs market value — and the undervaluation risk

Guideline value and market value are two different numbers, and the gap between them is where buyers get caught out. Guideline value is the government's notified minimum for the area — a floor, not the going rate, and it often trails actual prices. Market value is what a buyer and seller actually agree, and it is the price stated in the sale deed. Duty is charged on the higher of the two: if the sale price is above the guideline value, duty is computed on the sale price; if the sale price is below it, duty is still computed on the guideline value.

A common piece of bad advice is to register at the guideline value while paying the seller more in undocumented cash, to save on stamp duty. This is under-declaration, and it creates exposure under the Income-tax Act for both sides.

• For the seller: Section 50C treats the stamp duty value — the value on which duty was charged — as the sale consideration for computing capital gains, if it exceeds the declared price beyond a tolerance band. A seller who under-declares can still be taxed on the higher stamp duty value.
• For the buyer: Section 56(2)(x) treats the gap between the stamp duty value and a lower purchase price as 'income from other sources' in the buyer's hands, again beyond a tolerance band, and taxes it accordingly.
• Current law allows a tolerance of up to 10% between the declared price and the stamp duty value before these provisions bite. The precise limit and how it applies to a given transaction is a tax question — confirm it with a chartered accountant.

The saving on stamp duty from under-declaring is small relative to the income-tax exposure and the black-money risk of paying part of the price in cash. The safer position is to declare the real price and register on the higher of that price or the guideline value — which is what the sub-registrar charges duty on in any case.

How this connects to the patta and EC checks

Checking the guideline value is a cost step, not a title step, and it belongs alongside — not instead of — the record checks a Tamil Nadu buyer should already be running. The guideline value tells you the minimum registration cost. The patta, chitta and FMB from the Revenue Department's e-services portal tell you who the revenue record shows as holder and how the land is classified. The encumbrance certificate from TNREGINET tells you what has been registered against the property — sales, mortgages and attachments over a period. And the registered sale deed and parent-document chain establish title. A guideline-value lookup priced into a budget on a property that fails any of those checks is money committed to the wrong parcel.

• Check the guideline value on TNREGINET for the exact zone, SRO, village and street before you agree a price.
• Compare it to the sale price — duty and the registration fee are charged on whichever is higher.
• Budget 7% stamp duty and the 4% registration fee (3% for the eligible women concession) on that higher value, plus conveyancing costs — use the TNREGINET calculator to confirm the exact figures.
• Declare the actual sale price in the deed; do not register below the price you are paying to save duty.
• If the price is below the guideline value, ask a chartered accountant about the Section 56(2)(x) implication before you sign.
• Run the patta, chitta, FMB and a long-period encumbrance certificate in parallel — guideline value confirms cost, not title.
• Confirm the live guideline value and current rates on TNREGINET on the day you register.

SourceInspector General of Registration, Tamil Nadu — TNREGINET (guideline value search, duty and fee calculator, encumbrance certificate)

SourceRegistration Department, Government of Tamil Nadu — official website (stamp duty and registration fee schedule)

SourceIncome-tax Act, 1961 — Section 50C: stamp duty value as full value of consideration

SourceIncome-tax Act, 1961 — Section 56(2)(x): sum or property received for inadequate consideration

SourcePropWatch — Patta and Chitta in Tamil Nadu: how to check, verify and download a land record online

SourcePropWatch — Guidance value in Karnataka: how to check it, and how it sets your stamp duty

SourcePropWatch — Chennai real estate legal & TNRERA report