GST Payment of Tax and Challan (PMT-06): Step-by-Step Guide 2026

GST Payment of Tax and Challan (PMT-06): Step-by-Step Guide 2026

Filing your GST return is only half the job. Somewhere in that process, you also need to actually pay the tax you owe, and this is where a lot of small business owners get confused. Should you pay before filing the return or after? Where does the money go? What is this PMT-06 form everyone keeps mentioning? And why does the portal talk about a "cash ledger" and a "credit ledger" as if they are two separate wallets?

If you have ever stared at the GST portal payment screen wondering what button to click next, you are not alone. GST payment has its own logic, and once you understand the basic flow, it becomes one of the simpler parts of compliance. This guide breaks down exactly how GST tax payment works, what the PMT-06 challan is, and how the electronic ledgers fit together, so you never lose sleep over a payment deadline again.

What is GST Payment and the PMT-06 Challan

Under GST, you do not simply transfer money to a government account the way you might pay a vendor. Instead, the system works through a structured challan-based mechanism. Whenever you need to deposit money towards your GST liability, whether it is tax, interest, late fee, or penalty, you first generate a challan in Form PMT-06 on the GST portal. This challan specifies the exact amount and the head under which it is being paid, such as CGST, SGST, IGST, or cess, and it generates a unique reference for that payment.

Once the PMT-06 challan is generated, you complete the actual payment through one of the available modes, commonly net banking, over-the-counter payment at authorised banks for smaller amounts, or NEFT/RTGS for larger amounts. The moment the payment is successful, the amount gets credited into your Electronic Cash Ledger on the GST portal.

This cash ledger is essentially your prepaid balance with the government, broken down by tax head. When you file your return and declare a tax liability, that liability is settled either from your Electronic Credit Ledger, which holds your available input tax credit, or from the Electronic Cash Ledger, which holds money you have actually deposited via challan. Any liability not covered by available input tax credit must be paid in cash through this challan process before the return can be filed.

Why It Matters

Understanding this challan and ledger system matters because GST payment mistakes are expensive and sometimes hard to reverse. If you pay under the wrong tax head, say you accidentally deposit money under SGST when the liability was actually IGST, that money sits in the wrong ledger and does not automatically settle your actual liability. Correcting this usually means going through a formal ledger transfer or refund process, which takes time and can trigger interest on the underlying liability in the meantime because it technically remains unpaid on the correct head.

It also matters because interest accrues automatically for delayed tax payment, calculated from the original due date, regardless of whether you have "meant to pay" or generated a challan late. Many business owners assume that as long as the return gets filed eventually, they are fine, but interest is calculated on the tax amount for every day of delay, and it adds up.

Additionally, knowing how the credit ledger and cash ledger interact helps you plan cash flow better. If you have significant input tax credit available from your purchases, your actual cash outflow for a period might be small or even zero, since the credit absorbs much of the liability. Business owners who do not track this properly sometimes pay more in cash than necessary, or conversely get caught off guard when they assumed credit would cover a liability that it did not.

Finally, the payment and challan process is directly tied to your ability to file returns. Under the current system, you generally cannot file GSTR-3B with an unpaid liability, since the return filing process itself pulls from the cash and credit ledgers to settle the declared tax. This means payment and filing are tightly linked steps, not separate tasks you can defer independently.

Who Needs to Understand This Process

This process is relevant to every GST-registered taxpayer with any tax liability, which includes:

• Small business owners and traders who charge GST on sales and need to deposit the net liability after adjusting input tax credit
• Freelancers and professionals registered under GST, especially those without much input tax credit to offset, meaning most of their liability is paid in cash
• Businesses under the QRMP scheme, who need to make monthly payments through a simplified challan process even though the return itself is filed quarterly
• Composition scheme taxpayers, who pay tax through a different simplified statement but still use a similar challan mechanism
• E-commerce sellers and exporters, who often deal with more complex ledger movements including IGST payments and refund claims
• Anyone who has received a demand notice, interest liability, or penalty from the GST department, since these are also settled using the PMT-06 challan

Essentially, if you have ever filed a GST return with any amount of tax payable, you have already engaged with this process, whether or not you fully understood the mechanics behind it.

What You Need Before Making a GST Payment

• GST portal login credentials, since challan generation happens on the official portal
• Correct calculation of net tax liability, meaning your total output tax reduced by eligible input tax credit, broken down properly by CGST, SGST, IGST, and cess as applicable
• Net banking access to an authorised bank, or the ability to make an NEFT/RTGS transfer, or access to an authorised bank branch for over-the-counter payment where the amount permits
• Knowledge of which tax head the liability falls under, since paying under the wrong head is one of the most common and frustrating GST payment errors
• Awareness of your existing Electronic Credit Ledger balance, so you know how much you actually need to pay in cash versus how much is already covered by input tax credit
• PAN and GSTIN details handy, since these are tied to the challan generation process

Step-by-Step Process to Generate and Pay a GST Challan

1. Log in to the GST portal using your credentials.
2. Navigate to Services, then Payments, and select "Create Challan."
3. Enter the amount you wish to deposit under each applicable head — CGST, SGST, IGST, and cess — along with the specific minor head such as tax, interest, penalty, or fee, depending on what you are paying for.
4. Choose your preferred payment mode: net banking, NEFT/RTGS, or over-the-counter for eligible amounts.
5. The system generates the PMT-06 challan with a unique Challan Identification Number (CIN) once payment is initiated.
6. Complete the payment through your chosen mode. For net banking, you are usually redirected to your bank's portal to authorise the transaction.
7. Once payment is successful, the amount reflects in your Electronic Cash Ledger, typically within a short period, though bank processing times can vary for NEFT/RTGS.
8. When filing your GSTR-3B, the system automatically shows the available balance in your Electronic Cash Ledger and Electronic Credit Ledger, and you use these balances to offset your declared liability.
9. If the available balance is insufficient to cover the full liability, generate an additional PMT-06 challan for the shortfall before you can complete the return filing.
10. After successful offset, file the return, which finalises the utilisation of both ledgers for that period and generates your filing acknowledgment.

Keep in mind that a PMT-06 challan, once generated, is typically valid for a limited period for payment. If you do not complete the payment within that window, you may need to generate a fresh challan.

Fees, Timelines & Interest in 2026

GST payment itself does not carry a separate "fee" beyond the actual tax amount, but delays and errors do have financial consequences. As always, treat specific rates and figures as indicative, and verify the current numbers before relying on them:

• Interest on delayed payment of tax is charged from the original due date until the date of actual payment, calculated on the outstanding tax amount. The applicable interest rate has historically been notified separately for genuine delays versus liabilities identified later, such as during departmental scrutiny, so confirm which rate applies to your situation.
• Interest on excess or wrongly availed input tax credit, if later found to have reduced your cash payment incorrectly, can also apply and is generally calculated differently, so verify the current provisions.
• Bank charges, if any, for NEFT/RTGS transactions may apply depending on your bank, though net banking through the GST portal's integrated payment gateway is typically free of additional charges.
• Late fee for the return itself (as distinct from interest on tax) applies separately if the return is filed after the due date, calculated per day, even if the tax payment itself was made on time but the return filing was delayed.

Because interest calculations compound the longer a delay continues, and because rates are periodically reviewed, it is worth checking the official GST portal or consulting a tax professional whenever you are unsure about an exact figure, rather than estimating.

Timeline and Due Dates for Payment

• Monthly filers generally need to pay their tax liability and file GSTR-3B by a fixed due date each month for the previous month's period.
• QRMP scheme taxpayers typically need to make a monthly tax payment using a simplified method, even though the actual GSTR-3B return is filed only once per quarter. This monthly payment is often based on either a fixed percentage of the previous quarter's liability or actual calculated liability for the month, and it still uses the same PMT-06 challan mechanism.
• Composition scheme taxpayers usually pay tax quarterly along with a simplified statement, on a different due date cycle than regular taxpayers.
• Payment due dates are generally aligned with, or slightly ahead of, return filing due dates, since the payment needs to be reflected in the ledger before the return can be filed and submitted.

Given that due dates occasionally shift due to GST Council decisions or portal-related extensions, always cross-check the current due date calendar on the official portal for your specific filing frequency.

Cash Ledger vs Credit Ledger vs Liability Ledger: Key Distinctions

Understanding the three ledgers on the GST portal removes most of the confusion around payment:

• Electronic Cash Ledger: This holds actual money you have deposited via the PMT-06 challan process. Think of it as your prepaid balance with the government, maintained separately for each tax head.
• Electronic Credit Ledger: This holds the input tax credit you are eligible to claim based on your purchases and the tax your suppliers have paid and reported. This is not cash you deposited; it is credit accumulated from your business inputs, and it can be used to offset your output tax liability, subject to certain rules on which heads can be set off against which.
• Electronic Liability Ledger: This reflects your total tax liability for a period, including tax, interest, late fee, and penalty, and it shows how much of that liability has been discharged using the cash and credit ledgers.

A common point of confusion is assuming credit ledger balance can cover everything, including interest and late fees. Generally, interest and late fees must be paid in cash and cannot be offset using input tax credit, while the core tax liability can often be partly or fully offset using credit, subject to current set-off rules between CGST, SGST, and IGST. Verify the current set-off hierarchy, since GST rules around cross-utilisation between heads have been refined over time.

Common Mistakes to Avoid

• Paying under the wrong tax head, such as depositing under SGST when the liability is actually IGST, which leaves the actual liability technically unpaid
• Assuming input tax credit can cover interest or late fees, when generally these must be paid in cash
• Letting the PMT-06 challan expire without completing payment and then forgetting to generate a fresh one before the due date
• Not checking the Electronic Credit Ledger balance before generating a challan, leading to either overpayment in cash or a shortfall during return filing
• Confusing "payment made" with "return filed." Depositing money into the cash ledger does not automatically file your return; you still need to complete the filing process to formally discharge the liability
• Ignoring interest calculations on delayed payments, assuming that paying "a little late" carries no cost since the return eventually gets filed
• Using NEFT/RTGS for payment close to the deadline without accounting for bank processing time, which can push the actual credit into the ledger past the due date
• Not reconciling input tax credit claims regularly, which can lead to relying on credit that later gets reversed or disputed, creating an unexpected cash shortfall

FAQ

What exactly is a PMT-06 challan?

It is the standard form used on the GST portal to generate a payment challan for depositing tax, interest, penalty, or fees into your Electronic Cash Ledger. You create it before making a payment through net banking, NEFT/RTGS, or over-the-counter at an authorised bank.

Can I pay GST without generating a challan first?

No, the GST payment process is challan-based. You must generate a PMT-06 challan specifying the amount and tax head before the payment can be made and reflected in your cash ledger.

What is the difference between the Electronic Cash Ledger and the Electronic Credit Ledger?

The Cash Ledger holds actual money you have deposited via challan, while the Credit Ledger holds input tax credit earned from your business purchases. Both can generally be used to offset your output tax liability, though interest and late fees typically must be paid from the cash ledger only.

What happens if I pay under the wrong tax head by mistake?

The amount sits in the incorrect ledger and does not settle the actual liability under the correct head, which can mean interest continues to accrue on the unpaid liability. You would generally need to follow the portal's ledger transfer or refund process to correct this, so it helps to double-check the head carefully before confirming payment.

Is interest charged if I pay the tax late but still before filing the return?

Yes, interest is calculated from the original due date of the tax liability to the date of actual payment, regardless of when the return is eventually filed. The earlier you clear the payment, the less interest accrues.

Do I need to make a payment every month if I am under the QRMP scheme?

Generally yes. QRMP allows quarterly return filing, but tax payment is usually still required monthly through a simplified challan-based method for the first two months of the quarter, with the final settlement done when the quarterly return is filed. Verify the current QRMP payment mechanics before relying on this.

Can I use my input tax credit to pay for interest or a late fee?

Generally no. Interest, late fees, and penalties typically must be paid in cash through the Electronic Cash Ledger, while the core tax liability can often be offset using available input tax credit, subject to current set-off rules.

How long does it take for a challan payment to reflect in the Electronic Cash Ledger?

Net banking payments usually reflect quickly, often within the same day, while NEFT/RTGS payments can take longer depending on bank processing times. It is best to complete payment well before the due date to avoid any last-minute delay pushing you past the deadline.

How Legal Suvidha Makes This Effortless

This is exactly the kind of process where one wrong document, a mismatched detail, or a missed deadline turns into a rejection, a resubmission, or a running penalty. Legal Suvidha handles the whole thing end-to-end so you can focus on your business.

• Fixed, all-inclusive price quoted upfront — professional fee plus government fee, itemised, with no hidden charges appearing later.
• A dedicated Chartered Accountant / Company Secretary who owns your case from the first call to the final certificate.
• Proactive updates and deadline alerts at every stage — we do not disappear after payment.
• Trusted by 10,000+ founders with a 4.9/5 rating and a multi-disciplinary team of CAs, CSs and lawyers.

Talk to a Legal Suvidha expert today for a free consultation and an exact, transparent quote on WhatsApp — and get it done right the first time.