Karnataka stamp duty and registration charges: how the calculation works

What it is

Stamp duty is a state tax on the legal instrument that records a property transaction. In Karnataka, the core law is the Karnataka Stamp Act, 1957. The Department of Stamps and Registration, working through sub-registrar offices and the Kaveri online system, administers registration-related services for property documents.

Registration fee is different from stamp duty. Stamp duty is linked to the instrument and the value on which the law charges duty. Registration fee is the separate amount collected for admitting and recording the document in the registration system. A buyer may see both amounts in one registration estimate, but they are two different components.

For ordinary sale deeds, Article 20 of the Schedule to the Karnataka Stamp Act is the key entry. A normal conveyance under Article 20(1) carries 5% duty on the market value. The Act also contains a separate Article 20(2A) for the first sale of certain flats or apartments. That concession is not the same thing as a general low-value-property discount.

The value used for duty is also important. Karnataka’s stamp law uses market value concepts, and the 2003 amendment connected market value with the higher of the open-market value estimated by the authorities and the consideration shown in the instrument. In day-to-day property registration, this usually means the sale price is compared with the applicable government value for that property.

Step-by-step process

• Identify the instrument. A sale deed, gift deed, partition deed, release deed, lease or mortgage can fall under different stamp-duty entries. This guide deals mainly with sale and conveyance calculations.
• Identify the property correctly. The valuation depends on details such as location, property type, measurement, survey or site details, apartment details and local-body classification.
• Compare values. The consideration in the deed is compared with the government value applicable to the property. The higher value is normally the base for stamp duty.
• Apply the correct Article 20 entry. A standard conveyance is not treated in the same way as the first sale of a qualifying flat or apartment under Article 20(2A).
• Add statutory extras if applicable. The system may add cess, surcharge or additional duty according to the property’s classification and the applicable law.
• Calculate registration fee separately. Karnataka’s registration-fee table was reported as revised from ₹10 to ₹20 for every ₹1,000 or part of ₹1,000, with the new rate taking effect on 31 August 2025.
• Use the official workflow. Kaveri pre-registration and the sub-registrar’s office are the practical points at which the calculation is checked and accepted.

Documents

The document list changes with the transaction. For a sale deed, buyers generally encounter the drafted deed, identity details of the parties, property description, previous title papers, tax or khata-related papers where relevant, payment details and proof of duty or fee payment. For a developer sale, apartment and project-related papers may also be part of the registration file.

For land parcels, the details in revenue records often matter because valuation and document drafting depend on the correct survey number, village and extent. Karnataka’s Bhoomi portal is the official gateway for revenue services such as RTC, mutation and khata extract services. These records help with identification, but they are not a complete substitute for a title review.

Apartment buyers generally need to be especially careful about the “first sale” point. The lower Article 20(2A) treatment is tied to the first sale of the flat or apartment in the specified bands. A resale flat may look similar in value, but it can be treated differently for stamp-duty purposes.

Fees and timelines

For a normal conveyance, Article 20(1) of the Karnataka Stamp Act states a 5% duty rate on market value. For a qualifying first-sale flat or apartment, later amendments created lower Article 20(2A) rates for specified value ranges. The 2020 Karnataka Stamp amendment material dealt with lower-duty treatment for first-sale apartments up to ₹20 lakh and for values above ₹20 lakh up to ₹35 lakh. The 2021 amendment extended the 3% band to first-sale apartments above ₹35 lakh and up to ₹45 lakh.

Above those concession bands, or where the transaction is not the first sale of a qualifying flat or apartment, the ordinary conveyance entry is the starting point unless another specific exemption or entry applies. A resale flat, a plotted site, an independent house and a commercial property should not be assumed to qualify for the apartment concession merely because the transaction value is modest.

Cess, surcharge or additional duty may be added after the basic stamp-duty entry is applied. These additions depend on the statute, the local-body category and the registration system’s classification of the property. Because those details can vary, a private estimate should be treated only as a planning number until the Kaveri output or the sub-registrar’s office confirms it.

Registration fee is worked out separately from stamp duty. Hindustan Times reported that Karnataka doubled the registration-fee measure for certain registrations from ₹10 to ₹20 for every ₹1,000 or part of ₹1,000, effective 31 August 2025. That change affects the fee side of the bill; it does not change the Article 20 stamp-duty rate by itself.

A simple method is to first find the chargeable value, then apply the relevant duty rate, then add any statutory add-ons, and only then add registration fee. For timing, buyers generally move from online preparation and payment to appointment and presentation before the sub-registrar. The exact appointment availability and completion time depend on the office workflow and document verification.

Common problems

The first common error is using only the price agreed between buyer and seller. If the official value is higher, the registration calculation may move to that higher base. This can make the final cost larger than the buyer expected at the time of negotiation.

The second error is treating the 2% or 3% apartment concession as a general rule for all properties below ₹45 lakh. Article 20(2A) is narrower. It concerns the first sale of specified flats or apartments within the relevant value bands. A resale transaction or a non-apartment property may not receive that treatment.

The third error is mixing up stamp duty and registration fee. A change in the registration-fee table changes only that fee component. It does not automatically reduce or increase the stamp-duty entry for the instrument.

The fourth error is relying on an informal calculator without checking the document category, the official value, the local classification and the latest registration-fee position. Even a small mismatch in measurement, location or property type can change the result.

How to verify

The first check is the official Revenue Department and Department of Stamps and Registration information. The Revenue Department’s stamps-and-registration page lists Karnataka stamp law material, including the Karnataka Stamp Act and amendments. Its services page also points users to Kaveri 2.0 and other registration services.

The second check is the property data. Buyers generally compare the deed description with revenue or municipal records, guidance-value inputs and, where relevant, apartment details. For land, Bhoomi revenue services can help match survey and ownership-related entries used for identification.

The third check is the transaction category. For an apartment, the important question is whether the deed is truly the first sale covered by the apartment concession. For a resale, plotted site, independent house or commercial unit, the normal conveyance calculation may be more relevant unless a specific provision applies.

The final check is the official payment and registration output. The challan, receipt, draft deed, appointment record and valuation details should be read together. If the system flags a mismatch or undervaluation issue, it is usually advisable to verify the classification with the sub-registrar or a property lawyer before treating the estimate as final.

What this means for buyers and owners

For buyers, the main risk is a budget gap. A negotiated price can be lower than the official value used by the registration system, but duty may still be computed on the higher figure. A first-sale apartment can also be treated differently from a resale flat, a site or an independent house. Sellers and owners should understand the calculation because undervaluation or a wrong document category can delay registration and create avoidable disputes at the sub-registrar’s office. The practical lesson is that online estimates are only working figures. The Kaveri calculation and the sub-registrar’s scrutiny are the important checkpoints before money is finally paid.