What is the Ba-Bs Form, Is It Still Required?

Ba-Bs forms are monthly reports submitted by businesses to declare purchases and sales exceeding a certain threshold.

Ba stands for "goods and services purchased", and Bs stands for "goods and services sold". The logic is simple, but the consequences are very impactful.

Why do they exist?

The goal is cross-checking. You report that you made a purchase of 200,000 TL from a supplier, and that supplier reports making a sale of 200,000 TL to you. If both declarations match, there is no issue.

If they don't match, the system flags it. One of the parties has to provide an explanation, either because they have an undeclared transaction or because they entered a different amount.

This mechanism is also used to detect fraudulent documents. When you report a purchase from a non-existent company, there is no matching declaration on the other end.

Who submits them and when?

Taxpayers who maintain books on a balance sheet basis submit this report. Those subject to the operating account basis and self-employed professionals are exempt.

Reports are submitted in monthly periods and for transactions exceeding a specific threshold limit. Transactions below the limit are not reported; however, transactions with the same person are aggregated and evaluated within the month.

If there are no transactions to report, in some cases, the obligation to submit a nil return may still arise. Confirm both the thresholds and your obligation status with your financial advisor — rumors about these forms being abolished circulate from time to time, so verifying the current status from the source is best.

What if there is a discrepancy?

Most discrepancies stem from recording differences rather than malicious intent. The three most common reasons:

Period difference. The invoice was issued on the last day of the month, but the other party recorded it in the following month. Even if both parties acted correctly, the match gets shifted.

Returns and discounts. A discrepancy occurs when one party reports the net amount and the other reports the gross amount. We covered this topic in our article on return invoices.

Missing records. An incoming invoice was not recorded. This is the easiest to prevent yet most frequently occurring situation.

The role of pre-accounting

Your financial advisor prepares the form, but the data inside comes from you. If your records are disorganized, the form will be too.

There are two practical habits that reduce the risk of discrepancies. First, recording incoming invoices without letting them pile up. Second, performing regular reconciliations with current accounts you work with in high volumes.

Reconciliation essentially means catching Ba-Bs discrepancies in advance. We explained this routine in our current account tracking article.

Frequently asked questions

Has the Ba-Bs form been abolished?

It is true that with the widespread adoption of e-documents, data has become already visible to the administration, sparking debates about the necessity of the form. Verify with your financial advisor whether your obligation applies for this year.

Is there a penalty if I submit late?

Yes, a special irregularity penalty is applied. When a voluntary correction is made after the deadline, the penalty may be applied with a discount.

Which amount is taken as the basis?

The general practice is based on the amount excluding VAT. Ask your financial advisor for details.

What should I do if the other party reported incorrectly?

If your own record is correct, you can provide an explanation with your documents. Contacting the other party and requesting a correction is the fastest way.

Ba-Bs is a mechanism that works in the background but silently evaluates you. Keeping organized records is your best defense.

Open a free account on Qolay.App to keep your purchase and sales records organized.