GST and TDS Reconciliation: How Businesses Keep Accounting Records Accurate

Your accounts can be properly reconciled and still not be right. The sales invoice might be entered into your accounts and yet be absent in the GST records. The supplier invoice might be recorded in the purchase ledger of your company, but the input tax credit related to it might not show up in your account. Your client might deduct the TDS before paying you, which results in your bank statement being lower than your sales invoice. The online marketplace might deduct various amounts like TDS, TCS, commissions, returns, etc before paying the remaining amount.

All of this does not always indicate any discrepancy. But if the records are not reconciled, it can lead to another issue - the records will not be true anymore. That is why reconciliation plays a very important role in bookkeeping and accounting services for your growing company.

GST reconciliation, TDS reconciliation and accounting reconciliation can help your business verify the financial data through external sources and find discrepancies.

It’s not just about getting the numbers to agree. It’s about understanding why the numbers do not agree, if they do not, and reconciling the differences using an audit trail.

What is Accounting Reconciliation?

Accounting reconciliation is the process of comparing two sets of financial documents to ensure that they tally. One set could be your accounting books.

The other one might include:

• Bank statements

• GST documents

• Invoices from suppliers

• Customer documents

• TDS documents

• Form 26AS

• AIS

• Marketplace settlements

• Documents from payment gateways

• Payroll documents

• Expense documents

The idea is quite straightforward:

Internal books + External documents = Financial consistency

Where there is a discrepancy, the accounting team figures out the reason for the discrepancy.

For instance, say your internal books show ₹10 lakh in customer receipts while your bank statements only show ₹9.7 lakh.

That ₹30,000 discrepancy might be caused by:

• Charges from the payment gateway

• TDS deductions

• Customer refunds

• Mismatch in settlement dates

• Bank charges

• Erroneous entries

• Transaction errors

Without accounting reconciliation, the discrepancy just remains a mystery. With accounting reconciliation, the business knows exactly where the ₹30,000 discrepancy went.

Importance of Reconciliation for Growing Businesses

The need for reconciliation grows as transactions grow. A business making 20 transactions a month will be able to reconcile discrepancies manually.

But a business having:

• 10,000 customer orders

• Several marketplaces

• Several bank accounts

• Hundreds of supplier invoices

• Several payment gateways

• Several GST registrations

Cannot depend solely on manual reconciliation. Even a small proportion of unreconciled transactions at such a volume may generate considerable financial discrepancies.

But the issue is not confined to the regulatory requirement alone.

Poor bookkeeping will influence the following:

• Profits calculation

• Cash flow statement

• Taxation calculation

• Working capital management

• Inventory valuation

• Vendor balances

• Customer balances

• Business valuation

• Management reporting

In other words, not only does poor reconciliation give rise to the problem of accounting but also the problem of business decision-making.

What does GST Reconciliation mean?

GST Reconciliation involves comparing the transactions with respect to GST in your books with the data available through the GST system and other records you maintain. In case of purchases, the transaction involving purchases is often compared with the data available in GSTR-2B to verify whether the eligible input tax credit is shown or not.

In case of sales, the following comparison can be done:

Sales Register → GSTR-1 → GSTR-3B → Books

This is basically done to highlight any discrepancy.

These discrepancies may be as follows:

• Unrecorded Invoices

• Duplicate Invoices

• Inconsistency in GSTIN Number

• Incorrect Invoice Numbers

• Tax Amount Inconsistency

• Date Discrepancy

• Missing Credit Notes

• Supplier Filing Issues

• Incorrect Taxation

• Inconsistencies in Input Tax Credits

Thus, GST reconciliation is more than just filing returns.

Why GST Reconciliation Is Needed?

Input tax credit can directly influence the tax liability of a business. However, a business does not generate input tax credit by simply having an invoice recorded internally.

The transaction must be accurately recorded and included in the corresponding GST information. Consequently, the process becomes very crucial for businesses that have a lot of suppliers.

For instance, think of a company that has 500 supplier invoices each month.

All these 500 invoices may appear in the accounting records of the business. However, let's say that only 470 invoices are shown in the relevant GST information.

This means that the accounting department will have to check the remaining 30.

There may be various reasons behind the problem, including:

• Supplier delays in filing returns

• Inaccurate GSTIN number

• Errors in recording the invoice

• Duplicate record

The lack of reconciliation makes the business think that whatever has been recorded in their books is automatically taxable. This may not prove to be beneficial.

GST Reconciliation Process: Practical Way Forward

Here is how a GST Reconciliation Process can be structured:

Step 1: Beginning with the Purchase Register

Take all purchase invoices recorded in the accounting system during the applicable period.

Ensure that:

• Name of supplier

• GSTIN

• Invoice number

• Invoice date

• Taxable value

• GST amount

• Total invoice value

Step 2: Matching with GSTR-2B

Match eligible purchase data with the corresponding GST data.

Matching for:

• Matched invoices

• Invoices missing

• Duplicated invoices

• Mismatch tax value

• GSTIN mismatches

Step 3: Classification of Mismatches

Every mismatch does not always indicate an error.

Classify as follows:

1. Matched

• All data matches.

• Timing mismatch

This might just be a case of a mismatch in periods.

2. Action by the supplier required

It might require the supplier to correct or provide information.

3. Action by accounting is required

It might require adjusting internal accounting books.

4. Requires review

Further scrutiny of the transaction is required before credit can be given.

Step 4: Follow up

Don't just leave it there once you have found out what causes the discrepancy.

A proper reconciliation process will involve assignment of responsibility.

Example:

Missing invoice → contact supplier → monitor the correction → validate credit

Reconciliation becomes not only reporting but also controlling.

Reconciliation of TDS: The Points that Businesses Should Verify

Reconciliation of TDS entails comparison of TDS entered in the accounting books of a business with the income-tax system's information.

For taxpayers, Form 26AS holds the information regarding TDS/TCS, whereas AIS holds the financial information and helps the taxpayer provide feedback on transactions reported.

The areas where TDS reconciliation may assist in discovering variations include:

• TDS deduction by the customers

• TDS entered in your books

• Information available on Form 26AS

• TDS certificate

• Actual amount received in your bank account

It is of utmost importance for businesses that make payments after TDS deductions.

Importance of Reconciling TDS Differences

Mismatch of TDS may lead to a number of issues.

Such as:

1. Lack of TDS credit

Even though tax has been deducted, it is not showing up as credit.

2. Wrong amount The amount in the books may not match the reported amount.

3. Wrong PAN

Incorrect information of the taxpayer may hamper the visibility of the credit.

4. Timing differences

There may be a difference in timing of recording and reflecting the deduction.

5. Error in customer reporting

Inaccurate information may have been filed by the deductor.

The differences must be looked into rather than discovered while filing the income-tax return.

Reconciliation in Accounting: A Larger Context

Other components form part of the larger accounting reconciliation process, including:

1. Bank reconciliation

Comparing the accounting ledger to the bank statements.

2. Sales reconciliation

Comparing orders, invoice records, and collections.

3. Purchase reconciliation

Comparing supplier invoices with purchase transactions in the books.

4. GST reconciliation

Comparing GST records with the portal.

5. TDS reconciliation

Comparing deduction amounts with books and tax records.

6. Marketplace reconciliation

Comparing marketplace orders and settlements with bank transactions.

7. Payment gateway reconciliation

Comparing collection, fee, refund, and settlement records from the payment gateway.

8. Accounts receivable reconciliation

Confirming customer receivables with invoices and collections.

9. Accounts payable reconciliation

Confirming vendor amounts with invoices and payments.

Why Bookkeeping Reconciliation Gets Tougher as the Business Grows?

One major mistake that people make is thinking accounting becomes more complex just because the income gets bigger. However, accounting complexity may happen because there are more points of contact financially.

For instance, a D2C startup may have:

Shopify + Amazon + Flipkart + quick commerce + Razorpay + multiple banks + multiple warehouses + multiple GST registrations + hundreds of vendors

Every new system will be another source of financial data.

And each source needs to be integrated into the process.

For instance:

Customer order

↓

Marketplace

↓

Marketplace fees

↓

Returns

↓

TDS/TCS

↓

Settlement

↓

Bank

↓

Accounting ledger

↓

GST records

↓

Financial reporting

If these systems don’t reconcile with each other, then the business might get multiple truths. This is exactly what proper accounting reconciliation prevents from happening.

Bookkeeping Issues for Businesses Having More Than One GST Registration

As an enterprise expands to more than one state, the bookkeeping issues can become increasingly complex.

A firm may have multiple GST registrations, locations, vendors, warehouses and sale points. Every additional registration is an extra record that requires management and reconciliation.

For instance,

More States + More GSTINs + More Locations + More Transactions = More Reconciliation Issues

The issue is not just having multiple GST registrations; it is about reconciling accounting records, invoices, GST data and credits among the GST registrations.

1. Multiple GSTINs

If an enterprise operates in multiple states, then multiple GST registrations are possible.

This means that transactions have to be entered for every GSTIN separately, as opposed to consolidating all GST entries together. Incorrect entry of the GSTIN number can result in reconciliation issues.

2. Mismatch in Invoices and GSTIN Numbers

All invoices should have the correct GST information. Inaccuracies in the GSTIN number, invoice number, tax amount, or date could result in a mismatch between accounts and GST.

The uploaded draft already highlights mismatches in GSTIN number, invoice number, and tax amount as some of the most common discrepancies in GST reconciliation.

3. Input Tax Credit in Multiple Registrations

Careful monitoring of input tax credits must be done in case of multiple GST registrations of a business.

Purchases made from vendors and recorded in the books must be cross-referenced with the GST details to check whether the information is available, and any follow-up actions should be taken or not.

This task gets more complex when the business has many suppliers from different states.

4. Inter-State and Intra-State Sales A business dealing in multiple states will experience both inter-state and intra-state transactions. Thus, the accounting system must take into account all these transactions in terms of their GST treatment and registration.

5. Multiple Warehouses/Locations An expanding business may have warehouses, offices, and other locations spread out in various states. This leads to the creation of extra data points which require linkage with the sales, purchases, inventory, and GST data.

The higher the number of systems and locations, the higher the need for the reconciliation process.

6. GST Data with Other Financial Data Points Reconciliation

Where there are multiple GST registrations, the reconciliation process for GST data cannot be done on a monthly basis only.

These are some of the areas that need to be reviewed by the accounting department:

• Sales data

• Purchase data

• GST returns

• Input tax credit

• Transactions GSTIN-wise

• Credit/Debit Notes

• Supplier details

• Tax figures

• Invoices

It is important to note that this has been highlighted in the uploaded draft because where there are multiple GST registrations, the process cannot be done manually alone.

7. The More Registrations the More Reconciliation

The problem lies in the following:

Each GST registration generates yet another record which should stay precise and synchronized.

It becomes hard to deal with spreadsheets and reconcile accounts for a growing company.

This is why multi-state companies need a system that will help them correlate their GST accounts with general accounting records, spot discrepancies and have an audit trail.

Multi-state GST is not only about compliance. It is also an accounting and reconciliation challenge.

Reconciliation in Marketplace and GST/TDS

For D2C, reconciliation in the marketplace requires special consideration.

Some of the considerations in marketplace settlements may include:

• Gross order value

• Commission from marketplace

• Freight costs

• Returns

• Refunds

• Penalties

• Deductions on advertising

• TDS

• TCS

• Other considerations

Thus, the amount debited in the bank account will never be equal to the gross sales. Lighthaus specifically notes this problem for D2C firms by explaining the concept of reconciliation of marketplace payments to orders and fee, return and penalty identification. This process also includes TCS settlement based on GSTIN-wise reconciliation and verification of TDS credit against the tax report.

This is significant since a company might mistakenly equate:

Gross sales To Net bank balance

These are two different things.

Common Errors in Reconciling GST

1. Delaying Reconciliation Until Year-End

Reconciling at year-end results in a much more complicated process to clean up.

Reconciliation should ideally be done on a monthly basis.

2. Thinking All Invoices Entitled to ITC

Simply entering an invoice internally doesn’t necessarily make all tax credits eligible for claiming. The underlying GST data and laws need to be taken into account.

3. Overlooking Supplier’s Mistakes

Sometimes, a missing invoice requires intervention from the supplier. Marking it as “unmatched” isn’t enough.

4. Failing to Reconcile Credit Notes

Credit notes affect taxable value and taxes. Therefore, they need to be correctly reconciled.

5. Mistaking Timing Mismatches for Actual Errors

Sometimes, mismatches happen due to the different time periods in which transactions occur. This needs to be properly understood when doing reconciliation.

TDS Reconciliation Mistakes Frequently Seen

1. Not Keeping TDS Apart in Accounts

If the bank receipt is entered without considering the TDS amount, the accounts won't show the complete transaction.

2. Not Looking at Form 26AS

The company needs to cross-check their TDS/TCS details instead of only checking within its own accounting records. Form 26AS and AIS are provided by the IT Department as part of the e-filing environment.

3. Neglecting Minor Differences

Small differences might add up over time.

A difference of ₹500 does not matter much.

But hundreds of ₹500 differences do matter.

4. Waiting Until Time of ITR

This way, fixing the transaction itself becomes hard by then.

5. Neglecting Follow-Up with Deductor

If the customer's TDS is wrong, the company will have to follow up with the deductor.

Improving the Accounting Process to Enhance Reconciliation Accuracy

Reconciliation is easier when it becomes part of the regular accounting process rather than being conducted from time to time.

Here are a few tips:

1. Conduct Reconciliation Often

Do not allow a backlog to build up. More transactions mean that you need to reconcile more often.

2. Standardize Your Process

Develop a standard process for:

• Collecting data

• Matching

• Detecting exceptions

• Conducting investigation

• Taking follow-up

• Performing corrections

• Reviewing

3. Exception-based reporting

Rather than reviewing all transactions manually each time, concentrate on those that are exceptions.

Let's say you have:

1,000 transactions

↓

970 are matching

↓

30 exceptions

↓

30 are reviewed

4. Develop an Audit Trail

Each correction must be done for a reason.

Document:

• What was changed

• Why did it change?

• By whom was it reviewed

• By which document is it backed

• When was it corrected?

This proves particularly beneficial when conducting audits or facing any queries related to taxation.

5. Integrate Your Systems

As your number of financial systems increases, the need for integration increases correspondingly.

Ideally, your accounting system should be connected to:

• Banking systems

• Payment gateways

• E-commerce platforms

• Marketplaces

• Inventory systems

• GST systems

• Payroll systems

The purpose here is to minimize manual data transfer.

Can Artificial Intelligence and Automation Enhance Accounting Reconciliation?

Yes, but automated tools must be applied prudently.

The manual approach usually implies:

Download → Copy → Paste → Compare → Identify → Investigate

It gets increasingly hard when there are numerous transactions to process.

Artificial intelligence-enabled accounting can aid in automating routine aspects of the process such as:

• Data extraction

• Transaction matching

• Categorization

• Detection of duplicates

• Exception detection

• Pattern detection

• Reconciliation process

• Reporting

And human accountants will be able to spend their time on exceptions, judgment, and review.

Such an approach makes sense. Automation is not aimed at replacing accounting knowledge. Rather, automation is meant to make less routine work for accountants.

Lighthaus bases its approach precisely on this synergy: technology does routine accounting tasks while its accounting team evaluates the books and financial performance.

What Should a Reconciliation Dashboard Include?

A good reconciliation system will not just inform that: “Reconciled.”

But instead help you answer:

1. What matched?

Transactions reconciled successfully.

2. What did not match?

Exceptions that need to be addressed.

3. Why was it not matched?

Timings, missing invoice, wrong amounts, problems with suppliers, bank fees, etc.

4. Who needs to take action?

Finance team, suppliers, customers, marketplaces or operations.

5. What is the financial impact?

Value in ₹ of the exception.

Is it sorted out?

Open, in process or closed. And so, it makes reconciliation a financial control mechanism.

When Should a Company Reconcile by Outsourcing?

There are certain accounting activities that get more complicated when the volume of transactions grows.

Reconsider in-house activities or use an expert accountant when:

1. You always have late books

Late reconciliations cause problems with understanding finances.

2. Your company uses mostly spreadsheets

Spreadsheet accounting can be handy; however, working with big files is risky.

3. You sell your products via many channels

Many sales channels mean more settlement data to be reconciled.

4. You conduct business in different states

Many GST accounts increase the volume of records to be watched.

5. You work with many vendors

Many vendors lead to more invoices, GST records and potential mistakes.

6. You do not know where money is lost

Invisible fees, charges and rebates can reduce margins without your knowledge.

7. Your finance department spends much time on matching

This is probably the best way to know when reconciliation needs to be done by outsourcing.

The finance function should not spend all the time looking for figures. The finance department should also interpret the data.

What to Look For from Your Reconciliation Accounting Partner?

When you choose to outsource your bookkeeping reconciliations, be careful to check not just that they are capable of “doing accounting.”

Make sure they are experienced in handling the intricacies of your business.

Seek experience with:

• Reconciliation of GST

• Reconciliation of TDS

• Bank reconciliation

• Vendor reconciliation

• Marketplace settlements

• Payment gateway reconciliations

• Direct-to-consumer (D2C) accounting

• Multiple-state GST

• Inventory

• Financial reporting

Ask also:

• How frequently do you reconcile?

• How are discrepancies identified?

• Who investigates discrepancies?

• How are supplier/marketplace problems handled?

• How is the chain of reconciliation maintained?

• How fast is your book closure?

These may give you a better indication of the quality of the accounting process than vague promises of “accurate bookkeeping.”

GST, TDS and Accounting Reconciliation: An Inseparable Process

The mistake companies often make in their operations is viewing each reconciliation process as a stand-alone event.

The fact is that it is not true.

Take the case of a straightforward sales transaction.

Customer initiates order

↓

Order is billed

↓

Order revenue recognized

↓

Payment by customer

↓

TDS is charged when it is applicable

↓

Net amount is deposited to the bank account

↓

The TDS gets credited in the tax records

↓

The process ends up being part of the accounting process

Every single step involves creating some sort of financial record.

Good reconciliation links all such records together.

In case of a D2C company: Market place settlement → fees → returns → TDS/TCS → net payable → bank

In case of purchasing:

Supplier's invoice → purchases register → GST data → input tax credit → supplier payment → bank

Conclusion: Reconciliation Is When Your Books Start Speaking the Truth

An accounting system can record transactions.

A dashboard can show figures.

A tax portal can provide data.

But none of these will ever guarantee that your financial records are in sync with each other.

Reconciliation is what helps connect the dots.

For growing businesses, this would mean comparing:

• Books with banks.

• Expenses with GST details.

• TDS reports with tax returns.

• Marketplace payouts with orders.

• Payments with invoices.

• Financial statements with the transactions behind them.

Once this happens, your books stop being just a requirement for compliance purposes.

Your books begin to serve as an effective source of business insights. And whenever there is a mismatch in the records, it does not mean that you should conceal this discrepancy.

Rather, the idea is to identify the issue, analyze it and resolve it.

In cases where a business needs to manage multiple sales platforms, vendors, payment gateways and GST registration, this task becomes almost impossible to complete manually.

This is where the concept of an automated accounting system comes into play.

FAQs

1. What is GST reconciliation?

GST reconciliation is the procedure of matching the entries made for GST related transactions in a business’s record with GST records so as to find out any missing invoices, double counting and tax mismatch.

2. Why GST reconciliation is important for businesses?

GST reconciliation helps businesses detect any discrepancy in their bookkeeping with GST data for better reporting. This can help businesses detect issues related to input tax credit or other factors.

3. What is TDS reconciliation?

TDS reconciliation is the comparison of TDS data in the records of a business with the corresponding tax data. This includes the information available on TDS/TCS in Form 26AS.

4. What is accounting reconciliation?

Accounting reconciliation is the comparison of accounting records with each other for matching. Examples of accounting reconciliation include bank reconciliation, vendor reconciliation, GST reconciliation, etc.

5. How often should businesses conduct GST reconciliation?

There is no fixed answer to this question and it depends upon the volume and complexity of the transactions. It is generally recommended for growing companies to reconcile frequently rather than annually.

Regulatory information and practical caution

Tax-law note (reviewed 30 October 2026): The Income-tax Act, 2025 took effect on 1 April 2026. The 57th GST Council meeting of 8 October 2026 issued recommendations; businesses must check applicable notifications, rules and their own circumstances before applying a proposed change. For source guidance, refer to the Income Tax Department and the GST Council announcement. This is general information, not transaction-specific tax advice.

Related Lighthaus resources

Monthly bookkeeping and accounting checklist · GST and TDS compliance for monthly invoices

For help with reconciliations and financial reporting, explore Lighthaus.