How to Close a VAT Deficit in Turkey: Difference from VAT Carried Forward

The short answer to how to close a VAT deficit: by using your deduction right in full, making tax base adjustments on time, offsetting your refund receivable against your debts and planning the payment around your cash flow. A VAT deficit (KDV açığı) is the VAT payable that arises when the VAT calculated on sales in a period exceeds the VAT paid on purchases, and that has to leave your cash account. This amount is not a penalty or an error. It is the company’s obligation to pass on to the state the tax it has collected, or will collect, from its customers.

The problem usually stems less from the amount itself than from its timing. If a sale has been made and invoiced but the payment has not yet come in, the company pays tax on a sale it has not been paid for. In this article we distinguish the VAT deficit from VAT carried forward, explain the legal ways to close it step by step, and also state clearly the wrong method to avoid.

What is a VAT deficit and why does it arise?

A VAT deficit is the positive difference, in a tax period, between the VAT you calculate on sales and the VAT you pay and can deduct on purchases. In practice, this difference appears on the “VAT payable” line of the return. The concept is not an official legal term; it is an everyday expression company managers use to describe a payable amount that comes out higher than expected.

This picture is most common in high value-added businesses. In businesses whose expenses consist largely of personnel costs, such as consulting, software and service companies, there are few purchase invoices. Since salaries and SGK premiums do not include VAT, the deductible amount stays low, while the VAT on sales turns almost entirely into a payment.

The second common cause is sales on credit terms. Under VAT Law No. 3065, tax arises upon the delivery of goods or performance of services, not upon collection. A company selling on three-month terms pays the VAT on that sale with the following month’s return without having collected the price. What widens the deficit is often not the tax burden but the time gap between collection and payment.

The difference between VAT carried forward and VAT payable

The two concepts are two different results of the same calculation. If calculated VAT exceeds deductible VAT, VAT payable arises and is paid to the tax office. If deductible VAT is greater, the difference becomes VAT carried forward and, under Article 29/2 of the law, is carried over to subsequent periods; as a rule, it is not refunded.

This distinction matters when closing a VAT deficit, because the VAT carried forward you hold is the first remedy for the deficit. The amount carried over from previous months is automatically deducted from the tax calculated in the current period. So a high payment in one month may also indicate that the receivable accumulated in previous months has been used up.

We covered the cases in which VAT carried forward can be recovered in cash or by offset in our What is a VAT refund article. Here we focus on what a company on the payable side can do within legal limits.

How to close a VAT deficit: 5 legal ways

The five ways below are based not on reducing VAT but on the company fully using the deduction and payment options it is entitled to. None of them involves producing documents without a genuine transaction. At Akal CPA, we follow this order from the least costly to the one requiring the most planning.

1. Use your deduction right in full and on time

Part of the deficit arises from deductions waiting to be used. Purchase invoices that have not been accepted in the e-Invoice inbox, have not been entered in the books or reach accounting late are not included in that month’s deduction. Article 29/3 of the law ties the deduction to the period in which the document is entered in the statutory books; if recording is delayed, so is the deduction.

This period is not unlimited. If the end of the year following the calendar year in which the taxable event occurred passes, the deduction right is lost. VAT paid at customs on imports and VAT declared and paid as the responsible party (reverse charge) for services purchased from abroad can also be deducted under subparagraphs (b) and (ç) of the same article. These two items are frequently overlooked in companies with foreign shareholders.

Not all VAT on purchases is deductible. Article 30 of the law excludes from deduction the VAT on passenger car purchases (except for businesses engaged in renting these vehicles) and the VAT on expenses not accepted as deductible in determining profit. We explained which purchases go on the list, document by document, in our deductible VAT list guide.

2. Make tax base adjustments in the period of the change

When goods sold are returned, a transaction is canceled or a discount is granted afterwards, the VAT you calculated earlier no longer reflects the actual transaction. In this case, Article 35 of the law requires the seller to adjust the tax it owed, and the buyer to adjust the tax it deducted, in the period in which the change occurs. For returned goods, the goods must actually re-enter the business and this must be shown in the books and on the return.

Another adjustment concerns uncollectible receivables. Under Article 29/4 of the law, the VAT previously calculated and declared on a receivable that has become worthless within the scope of Article 322 of the Tax Procedure Law (VUK) can be deducted in the period in which the receivable is written off. Not every doubtful receivable falls within this scope; worthlessness must be documented under the conditions set out in the law.

3. Set your purchasing and investment schedule according to your business plan

The month in which the company makes a machinery, equipment or raw material purchase it would make anyway affects that month’s VAT payable. Under the general rule, VAT on depreciable assets is also deductible. So planning major purchases together with the sales calendar may ease cash pressure in months with high payments.

The line here is clear. Making an unnecessary purchase just to deduct VAT ties up the company’s cash a second time for tax. The full purchase price is paid; all that is gained is an earlier deduction of the VAT portion of that price. We recommend thinking of this method not as a saving but as timing a genuine need.

4. Turn your refund receivable into a debt payment with a VAT offset

Some companies have transactions that give rise to a refund right on one side and tax and premium debts payable on the other. For fully exempt transactions such as exports, Article 32 of the law, and for reduced-rate transactions, Article 29/2, allow the refund receivable to be offset against the company’s tax and social security premium debts. This is what is called “VAT offsetting” (KDV mahsuplaşma) in practice: instead of waiting for a cash refund, the receivable is applied to debts that have been assessed.

An offset closes the deficit in reality, not just on paper, because no cash leaves the account for the debt payable. However, the request is made with the documents and lists specified in the Revenue Administration (GİB) VAT General Implementation Communiqué and is subject to deadlines. We handle the preparation of the refund file and the follow-up of the offset request through our VAT refund services .

5. Make a cash plan for your VAT debt and request deferral if necessary

The deadline for the VAT return and payment is the 28th of the month following the period, as set by Revenue Administration (GİB) Tax Procedure Law Circular No. 149. Since this date is the same every month, the VAT debt is no surprise. Keeping collected VAT in a separate account and entering the tax on credit sales in the cash plan at the time of sale prevents most of the deficit from the outset.

If payment is genuinely not possible, the official route should be used instead of ignoring the debt. Article 48 of Law No. 6183 on the Procedure for Collection of Public Receivables allows the debt to be deferred with interest for up to 72 months, upon written request and against collateral, if paying on the due date would put the debtor in serious difficulty. This period was increased from 36 months to 72 months by Law No. 7582.

The collateral requirement has also changed. Under Presidential Decree No. 11414 published in the Official Gazette dated June 13, 2026, no collateral is required for deferrals totaling up to 10 million TL per collecting tax office. Acceptance of a deferral request is at the tax office’s discretion; if it is not granted, the law sets the payment period that may be given from notification of the rejection letter at a maximum of 30 days.

How much does late-paid VAT cost?

Late payment interest accrues on VAT not paid on time from the end of the due date. Under Article 51 of Law No. 6183 and Presidential Decree No. 10556 published in the Official Gazette dated November 13, 2025, this rate is 3.7% for each month. Fractions of a month are calculated daily, so even a delay of a few days creates a cost.

Consider a hypothetical example: if a company with 200,000 TL of VAT payable delays payment by one month, the late payment interest alone comes to 7,400 TL. If the same debt is deferred, under Article 52 of Law No. 6183 late payment interest runs until the deferral date, deferral interest applies thereafter and the payment plan becomes official. Delaying on your own both makes the debt more expensive and increases the risk of enforcement proceedings.

Which methods widen the VAT deficit instead of closing it?

The suggestion of “finding invoices”, which we hear most often in practice, is not a legal route. Under Article 359 of the Tax Procedure Law (VUK), a document issued as if a transaction existed when it did not is a fake document, and imprisonment of three to eight years is prescribed for anyone who uses it. A document that misrepresents a genuine transaction in amount or nature is a misleading document; the penalty for anyone who uses it is imprisonment of eighteen months to five years.

The criminal side is not the only risk. A deduction based on such a document is disallowed, and the tax difference is reclaimed with a tax loss penalty and late payment interest. Article 36 of the law, in determining the taxpayers whose refunds can be made without requiring an inspection report, also lists as a criterion whether there is a negative report or finding regarding fake or misleading documents. In short, this route, which reduces the payment in the short term, also narrows the company’s refund and collateral options in later years.

Another mistake is leaving VAT off the invoice or keeping a sale off the books. These practices may be subject to a tax loss (underpaid tax) penalty and tax evasion offenses. The limit of legal optimization is clear: using the deduction right in full, making adjustments on time, offsetting the refund and planning the debt.

Example scenario: a service company selling on credit terms

For example, consider a hypothetical limited liability company in Ankara providing software services to corporate clients. In May, the company issues service invoices of 1,000,000 TL excluding VAT and calculates 200,000 TL of VAT at the 20% rate. Its clients pay on 90-day terms, while the company’s purchases that month are only 150,000 TL, with 30,000 TL of VAT on those purchases.

In this case, VAT payable of 170,000 TL arises for the May period and is paid within the filing deadline in June, while the collection will come in August. The company first checks whether there are invoices in the inbox not entered in the books, then whether it has deducted the VAT it paid as the responsible party for a foreign software license. It then sets up a cash table showing payment terms and VAT together.

The structural solution is on the contract side. A commercial arrangement such as collecting the VAT up front and the net price on credit terms is a matter for agreement with the customer and does not change the tax calculation; but it closes the cash gap. Which combination is suitable depends on the company’s bargaining power and customer base, so it is necessary to look at the figures together before deciding.

The lasting solution: make VAT part of the monthly close

In most companies, the VAT deficit is noticed at month-end, although the data builds up during the month. An accounting routine that tracks calculated and deductible VAT every week makes the amount predictable before the payment date. We recommend doing this tracking in the same table as the sales collection plan and the major purchase schedule.

You can find our other articles on VAT returns, withholding and refunds in the in the Tax Legislation category . Implementation details of the deduction, tax base adjustment and refund rules are set out in the Revenue Administration (GİB) VAT General Implementation Communiqué , and the provisions on deferral and late payment interest in the text of Law No. 6183 .