What is the Khajane 2 (K2) Portal? Karnataka's Treasury Payment System Explained

Khajane 2 -- universally called K2 -- is the Karnataka state government's integrated treasury management system. Every payment made to the Karnataka government, from stamp duty on property registration to court fees, vehicle tax, and professional tax, flows through the Khajane 2 portal. It replaced the older Khajane 1 system to bring all government receipts onto a single, auditable digital platform.

For property buyers in Bangalore, K2 is the mandatory portal for paying stamp duty and registration fees before visiting the Sub-Registrar Office (SRO). The K2 payment generates a challan with a Government Reference Number (GRN) that must be verified before the Kaveri portal allows you to book an SRO appointment. Without a valid K2 challan, no registration can proceed.

K2 handles the money. It does not generate your property documents, track your registration, or issue the Encumbrance Certificate. All of that is Kaveri's job. These two portals work in tandem but perform completely different functions -- a distinction that confuses nearly every first-time buyer in Bangalore.

The K2 portal is accessible through the Karnataka treasury website. Most buyers reach it via a redirect link within the Kaveri portal at kaveriregistration.karnataka.gov.in, which sends you to K2 specifically for the stamp duty payment step. Understanding this workflow saves significant time and prevents the most common errors buyers make before their SRO appointment.

K2 Challan vs BBMP Challan: The Confusion That Trips Up Bangalore Buyers

This is the most frequent source of confusion in Bangalore property transactions, and it happens at all buyer experience levels. People confuse two completely separate payment systems because both generate "challans" related to the same property.

K2 Challan (Khajane 2): This is the payment receipt generated on the Karnataka Khajane 2 treasury portal when you pay stamp duty and registration fee for a property registration. It is a one-time payment made before your Sub-Registrar Office visit. Without this specific challan, the Kaveri portal will not let you book an SRO appointment, and the SRO will not register your deed.

BBMP Challan: This is the payment receipt generated when you pay BBMP (Bruhat Bengaluru Mahanagara Palike) property tax, either annually or in arrears. This is paid on the BBMP online payment portal or at ward offices. It proves that the property tax for the current year has been paid. It has nothing to do with property registration or stamp duty.

The confusion arises because both documents are called "challans," both relate to the same property, and both need to be in order around the time of a property transaction. In practice:

• The K2 challan must be presented at the SRO on registration day to prove stamp duty was paid.
• The BBMP property tax receipt must be presented to show the property is tax-compliant.
• Bringing a BBMP receipt when the SRO asks for the K2 challan will not work. They are distinct documents from different systems.

Many buyers arrive at the KR Puram Sub-Registrar Office with the BBMP receipt in hand thinking it satisfies the payment requirement. It does not. The SRO staff will turn you away and you will need to reschedule your appointment. Getting this distinction clear before your registration day prevents a wasted trip and a delayed registration.

K2 vs Kaveri Online Services: Which Portal Does What?

Kaveri and K2 are both Karnataka government portals connected to property registration, but they serve fundamentally different purposes. Many buyers visit one expecting the other's functionality and lose time as a result.

Function	K2 (Khajane 2 Treasury)	Kaveri Online Services
Calculate stamp duty amount	No	Yes (stamp duty calculator built in)
Pay stamp duty	Yes -- this is K2's primary function	No (redirects to K2 for payment)
Pay registration fee	Yes	No
Generate sale deed / conveyance deed	No	Yes
Book SRO appointment	No	Yes
Issue Encumbrance Certificate (EC)	No	Yes
Track registration status	No	Yes
Verify payment before SRO appointment	Generates the GRN that Kaveri verifies	Verifies the K2 GRN to unlock appointment

The workflow is: use Kaveri to calculate stamp duty and draft your deed, then go to K2 to pay, then return to Kaveri to enter the K2 GRN and book your SRO appointment. Think of Kaveri as the processing centre and K2 as the payment counter. Both are needed; neither does the other's job.

Step-by-Step: Generating Your K2 Stamp Duty Challan in Bangalore

Before starting the K2 payment, you must know the correct stamp duty amount. This comes from the Kaveri portal's stamp duty calculator, using your property's area, location (KR Puram, Whitefield, Mahadevapura, etc.), and the actual sale price. Stamp duty is calculated on whichever is higher: the guidance value (circle rate) set by the Karnataka Department of Stamps and Registration, or the actual sale price. Never guess the amount -- use the Kaveri calculator.

Step 1: Access the K2 portal

Go to the Kaveri portal at kaveriregistration.karnataka.gov.in and navigate to the payment section, which redirects to K2. Alternatively, access K2 directly through the Karnataka treasury / Khajane 2 portal. Use a desktop browser for best results; K2 is not fully optimised for mobile.

Step 2: Select the correct Head of Account

Choose the category for your payment. For property registration stamp duty, select "0030 -- Stamps and Registration Fees." For registration fee (a separate line item), select the appropriate sub-head. The system will guide you through the available heads. Selecting the wrong head is one of the most common errors -- double-check before confirming.

Step 3: Select your Sub-Registrar Office

For properties in KR Puram, Whitefield, and Mahadevapura, select KR Puram SRO (Sub-Registrar Office, KR Puram). Choosing the wrong SRO is a serious error -- the payment will be recorded against the wrong office and may not be accepted at the KR Puram SRO. If your property is in a different area, verify the correct SRO jurisdiction before selecting.

Step 4: Enter property and payment details

Enter the stamp duty amount as calculated on Kaveri, the property survey number or document number, and the district (Bangalore Urban for KR Puram, Whitefield, and Mahadevapura). Enter your PAN, Aadhaar number, and mobile number for contact and verification purposes.

Step 5: Review, pay, and save the challan

Review every detail on the confirmation screen carefully before paying. Once payment is made, K2 issues a challan with a unique Government Reference Number (GRN). Download or print this immediately. The GRN is what you enter in Kaveri to book your SRO appointment. Treat this challan the same way you would treat a bank draft -- it is irreplaceable for your registration.

K2 Challan Validity and What Happens if It Expires

A K2 stamp duty challan, once generated and paid, has a validity period during which it can be used for registration. The typical validity is 6 months from the date of generation, though this can vary based on the Karnataka government's current rules and the challan type. Always confirm the current validity with the SRO or the Kaveri helpline before generating -- policies can be updated.

If you generate a K2 challan but delay the SRO visit beyond the validity period, the challan lapses. This does not mean the money is lost, but it does mean you cannot use that challan for registration. To recover the amount, you must file a refund application through the District Registrar's office with the challan receipt, bank statement, and a written request. Refund processing through the Karnataka treasury takes between 30 and 90 days in most cases.

To avoid this situation entirely: do not generate the K2 challan until you have a confirmed SRO appointment date (or are within days of booking one). In practice, most buyers in the KR Puram jurisdiction generate the K2 challan 3-5 days before the SRO appointment after confirming the slot on Kaveri. This leaves no room for the challan to expire and gives you a small buffer for any payment verification delays.

If a deal falls through after you have already paid the K2 challan, the refund process is the same: application to the District Registrar, supporting documents, and patience for the 30-90 day processing cycle.

What Happens After K2 Payment? The Next Steps to Registration

Paying the K2 challan is one step in a multi-step registration process. Here is what comes next:

1. K2 challan generated: You receive a challan with a unique GRN (Government Reference Number).
2. Enter GRN in Kaveri: Log into kaveriregistration.karnataka.gov.in, navigate to your registration application, and enter the K2 GRN when prompted for the payment reference.
3. Kaveri verifies against K2: Both portals are Karnataka government systems -- they communicate directly. Kaveri checks whether the GRN matches a valid, paid K2 challan for the correct SRO and correct amount. This verification typically takes 15-30 minutes during working hours; up to 24 hours if there are reconciliation delays.
4. Book SRO appointment: Once the K2 payment is verified, Kaveri enables the SRO appointment booking module for your registration. Select the KR Puram SRO and an available slot. Slots fill up 5-7 days in advance for the KR Puram SRO -- book early.
5. Prepare for registration day: Print the K2 challan receipt and your Kaveri-generated deed document. Organise all required supporting documents.

K2 Payment Status: How to Check and What to Do if It Fails

Online government payment portals sometimes show a "pending" or "failed" status even though money was debited from your bank account. This is a known issue with the K2 payment gateway during peak hours or bank maintenance windows.

If the payment page shows "pending" or "failed" but your bank was debited:

1. Wait 24-48 hours without making a second payment. Treasury systems sometimes reconcile on overnight batch timers.
2. Re-check the K2 portal with your original transaction reference number. A GRN may have been generated even if the success page did not load properly.
3. Check your bank's transaction history for confirmation that the debit was successful and not reversed.
4. If the debit is confirmed but no GRN appears after 48-72 working hours, file a grievance through the K2 portal's help/grievance section with your bank transaction ID and debit proof.
5. Contact the KR Puram SRO or the District Registrar's office directly -- SRO staff have back-end tools to verify K2 payment status for disputed transactions and can provide a manual override reference for your appointment in genuine cases.

Do not make a second K2 payment until the first one is confirmed as failed (not just pending). Duplicate payments result in one excess challan that takes 30-90 days to refund through the treasury department's refund process.

Documents You Must Bring to the Sub-Registrar Office on Registration Day

For properties in KR Puram, Whitefield, and Mahadevapura registered at the KR Puram Sub-Registrar Office, here is the complete list of what you need on the day of registration:

Mandatory payment and deed documents

• K2 challan receipt (printed) showing stamp duty payment with GRN
• Sale deed printed on bond paper as specified by Kaveri (typically stamp paper generated via the Kaveri system)
• Kaveri registration acknowledgement / booking confirmation

Identity and KYC documents for all parties

• Aadhaar card (original) for buyer(s) and seller(s)
• PAN card for buyer(s) and seller(s)
• Two passport-size photographs of each party
• If Power of Attorney is used: original registered GPA and Aadhaar/PAN of the GPA holder

Witnesses

• Two witnesses with their Aadhaar cards (original)
• Witnesses must physically appear at the SRO and sign the deed in the Sub-Registrar's presence

Title and property documents

• Encumbrance Certificate obtained before registration
• Previous title documents (parent documents, link documents)
• Latest BBMP property tax paid receipt
• NOC from bank/lender if property has an existing loan (seller's bank's release letter)
• Society NOC for apartment buildings
• RERA registration details for under-construction properties (mandatory since 2017)

K2 Challan Errors and How to Fix Them

Wrong amount entered: If you paid a lower stamp duty amount than required (perhaps you used the wrong guidance value or made a calculation error), the SRO will flag the deficit on registration day. You must pay the shortfall through a fresh K2 challan before the registration can proceed. If you overpaid, excess stamp duty can be reclaimed through a refund application to the District Registrar -- it takes 30-90 days.

Wrong survey number or property details: If the K2 challan shows incorrect property details that do not match the Kaveri deed, the Kaveri portal may reject the GRN verification. This requires filing a grievance with the treasury department for correction. Depending on the nature of the error, the SRO may accept a written explanation with supporting documents, or you may need to apply for a refund and generate a fresh challan.

Duplicate payment (two challans for the same registration): If you accidentally made two payments, carry both challan receipts. Inform the SRO staff on registration day and use only one challan for the registration. For the excess payment, apply for a refund through the District Registrar's office with both challan receipts and a written explanation.

Payment made to wrong SRO: If you selected the wrong SRO in K2 (for example, selected Whitefield SRO but should have used KR Puram SRO), the challan will not be accepted at the correct SRO. You must apply for a refund and generate a new K2 challan with the correct SRO selected. This is one of the most disruptive errors because it cannot be fixed on registration day -- it delays the entire transaction. Always triple-check the SRO selection before paying.

KR Puram Property Registration: K2 + Kaveri Workflow End-to-End

For properties in KR Puram, Whitefield, and Mahadevapura -- all under the KR Puram Sub-Registrar Office -- here is the complete workflow from stamp duty calculation to receiving your registered deed:

Stage 1: Guidance Value Check on Kaveri

Log into kaveriregistration.karnataka.gov.in. Use the stamp duty calculator. Select district "Bangalore Urban," taluk (Bangalore East for KR Puram and Whitefield), and the specific locality. Enter the actual sale price. Kaveri displays the guidance value and calculates stamp duty on whichever figure is higher. Note this amount precisely -- it is what you enter into K2.

Stage 2: Deed Drafting on Kaveri

Use the Kaveri deed generation module to draft the sale deed. Enter all property details (survey number, ward number, area in square feet/metres, boundaries), party details (buyer and seller names exactly as on Aadhaar, PAN numbers, addresses), and consideration amount. Review the draft carefully. Any error in the registered deed requires a separate rectification deed and additional stamp duty.

Stage 3: K2 Challan Generation and Payment

Using the stamp duty amount from Stage 1, access K2. Select the KR Puram SRO under the Bangalore Urban / Stamps and Registration head. Enter the amount, property details, and payer details. Pay via net banking or debit card. Download and print the challan. Note the GRN.

Stage 4: SRO Appointment Booking on Kaveri

Return to Kaveri. Enter the K2 GRN in the payment section of your registration application. After Kaveri verifies the payment (typically within 30 minutes), book an appointment at the KR Puram SRO. As of mid-2026, KR Puram SRO slots are available 5-10 days in advance. Morning slots fill faster than afternoon slots.

Stage 5: Pre-Registration Day Preparation

Print the deed on bond paper (single-sided, A4, as specified in the Kaveri deed generation output). Ensure all parties sign the deed in the designated places before the SRO visit (not at the SRO counter -- signatures should already be in place when you arrive). Organise all documents, arrange two witnesses, and confirm the appointment time.

Stage 6: Registration at KR Puram SRO

Arrive at the appointed time. The Sub-Registrar's staff verify the K2 challan against their treasury system, verify the Kaveri deed application, collect biometrics (thumb impressions and photographs) of all parties, and register the deed. The entire in-office process typically takes 30-90 minutes for a well-prepared submission at KR Puram SRO.

Stage 7: Registered Deed Collection and Khata Update

The registered deed is available for download on Kaveri within 3-7 working days. Some SROs return the original registered deed the same day; KR Puram SRO returns it within 1-3 working days in most cases. After registration, file for BBMP Khata mutation using the registered deed within 3 months -- the sooner the better, as delays in Khata transfer create complications for utility connections and future transactions.

K2 Challan and Kaveri: Frequently Asked Questions

Can I pay stamp duty in cash at the Sub-Registrar Office?

No. Karnataka moved to fully digital stamp duty payment through K2. Physical stamp papers and cash payments at the SRO for stamp duty are no longer accepted for property registrations. All payments must go through the K2 (Khajane 2) portal before the SRO visit.

What are the current stamp duty rates in Bangalore for 2025-26?

For properties above Rs. 45 lakh (which covers most transactions in KR Puram, Whitefield, and Mahadevapura), stamp duty is 5% plus 10% cess on stamp duty, plus 1% registration fee. Total effective outgo is approximately 6.5-6.6% of the property value or guidance value, whichever is higher. Always verify the current rates using the Kaveri stamp duty calculator, as the Karnataka government can revise rates.

How long does K2 payment take to reflect in Kaveri?

Usually within 15-30 minutes during banking hours for IMPS or real-time transfers. For NEFT payments, it can take up to 2-4 hours. If the K2 portal does not show the payment as confirmed after 24 hours, check with your bank and raise a grievance on the K2 portal.

Can someone else make the K2 payment on my behalf?

Yes. The K2 challan records the property, SRO, and amount -- not the bank account holder's name as the buyer. The payment can be made from any bank account. What matters is the GRN and the amount being correct, not whose bank account the payment came from.

What if I need to cancel the K2 challan because the deal fell through?

There is no online cancellation on K2. File a refund application with the District Registrar's office in person, attaching the K2 challan receipt, your bank statement showing the debit, and a written explanation. Refunds typically take 30-90 days to process through the Karnataka treasury system. The money is not lost -- it is a waiting game.

Is there a K2 mobile app?

As of mid-2026, there is no dedicated K2 mobile application. Payments are made through the web portal. On mobile, use your browser's "Request Desktop Site" option for best results -- the K2 portal interface is designed for desktop browsers and several functions may not display correctly in mobile view.

What is the registration fee and is it paid through K2?

The registration fee in Bangalore is 1% of the guidance value or actual sale price (whichever is higher), subject to a ceiling of Rs. 15,000 for most residential property categories. Yes, it is also paid through K2 -- often on the same challan as stamp duty or as a separate line item depending on how the K2 payment is structured for your registration type.

The K2 portal shows my payment as pending for two days. Should I pay again?

Do not pay again until you have confirmed the first payment failed (not just pending). Check your bank statement -- if the amount was debited and not returned within 24-48 hours, the payment is likely reconciling in the treasury system. Wait 48-72 working hours. If still unresolved, raise a K2 grievance with your bank transaction proof. Making a second payment without confirming the first failed leads to a duplicate challan problem that takes 30-90 days to resolve via refund.