Tax disputes

How a tax dispute proceeds

1. Inspection or the tax office’s own finding. An inspection under the Tax Procedure Law (Vergi Usul Kanunu, VUK) art. 134–141 ends in a report (Tax inspection).
2. Assessment and penalty. The tax office assesses the tax and the office the taxpayer belongs to imposes the penalty (VUK art. 365); both are served in notices (ihbarname) (art. 93 ff., 366).
3. Choice of route. Within 30 days of service the taxpayer sues, asks for settlement or claims a penalty reduction.
4. Collection. Unpaid tax and penalties are pursued by a payment order (ödeme emri) (Law 6183 art. 55).

When a notice arrives, check:

• Date of service (tebliğ). The court period starts the day after service (Administrative Procedure Law, İdari Yargılama Usulü Kanunu, İYUK, art. 7/2, 8/1). The receipt, envelope or e-service record shows the date.
• Required content. A notice is void if it omits the taxpayer’s name, the type or amount of tax or the period for suing, or was not issued by the competent authority (VUK art. 108). A penalty notice gives the facts, the article of law, the evidence, the calculation and the period for suing, with the minutes and inspection report attached (art. 366).
• Limitation. Tax not assessed and served within five years from the start of the year after it arose is time-barred (art. 114). A tax-loss penalty must also be imposed within five years; service of the penalty notice interrupts the period (art. 374).

For a first estimate of the tax on an inheritance or on the sale of property there are the inheritance and gift tax calculator and the property capital gains tax calculator; they are estimates and do not show whether an assessment is correct.

Objecting to a tax penalty

Penalties. A tax-loss penalty (vergi ziyaı cezası) follows tax that was not assessed or was under-assessed (VUK art. 341). It equals the tax lost; if the loss arose through acts under art. 359 it is three times the tax (once for those who took part), and a return filed late but before an inspection began carries half (art. 344). Procedural penalties (usulsüzlük cezası) follow breaches of form (art. 351). The tax court (vergi mahkemesi) of the place of the office that imposed the penalty hears the case (İYUK art. 37/a). No penalty or delay interest arises if the authorities gave wrong written advice or changed their reading of a provision (art. 369); a penalty lapses on death (art. 372) and is not imposed where force majeure (art. 13) is known or proved (art. 373).

Three routes. Within 30 days of service the taxpayer chooses one:

Penalty reduction. A taxpayer who, within 30 days of service, applies to the tax office and undertakes to pay the tax and half the penalty on the due date, or within three months of it against security of a kind listed in Law 6183, has the other half of the penalty cancelled. Not paying as promised, or suing, forfeits the reduction (art. 376). For small procedural penalties, below a yearly revalued amount, the reduction rate is raised by half (additional art. 1).

Suing.

1. Count the period. It starts the day after service; holidays count, and if the last day is a holiday the period runs to the end of the next working day (İYUK art. 8). The legal deadline calculator gives a first estimate of the last day. The courts break from 20 July to 31 August, and a period ending in the break is extended to seven days after it (art. 8/3, 61), except in single-court towns away from the regional court’s seat.
2. Prepare the petition. Addressed to the tax court and signed, it names the parties and their addresses, gives a Turkish identity number for individuals, and states the subject and grounds, the evidence, the notice’s date, number and date of service, the type and year of the tax or penalty and the amount in dispute; the notice is attached (art. 3).
3. Pay the fee. If the fee or postage is short, 30 days are given to make it up, failing which the case counts as not filed (art. 6/4). The amount is not stated here.
4. Follow the defence. Each side may reply within 30 days of service, extendable once by up to 30 days for good reason (art. 16); a hearing is held at either party’s request if the amount exceeds a yearly revalued limit (art. 17).
5. Appeal. An appeal lies to the regional administrative court within 30 days of service of the judgment, except in tax cases below a yearly monetary limit (art. 45); appeal to the Council of State (Danıştay) lies in the cases listed in art. 46, also within 30 days. The limits are revalued each year and are not quoted (additional art. 1).

What cannot be challenged, or does not suspend collection. Taxpayers cannot sue over the bases they declared or the tax assessed on them; the provisions on tax errors are reserved (VUK art. 378). Actions concerning returns filed under protest (ihtirazi kayıt) and actions against collection measures do not suspend collection, though a stay can be requested separately (İYUK art. 27/4).

Waiving the right of appeal after judgment has its own payment and reduction scheme (VUK art. 379), not set out here.

Tax settlement

Settlement (uzlaşma) is an agreement with the tax authority that fixes a penalty at an agreed amount. Pre-assessment settlement (tarhiyat öncesi uzlaşma) takes place during an inspection (VUK additional art. 11); post-assessment settlement (tarhiyat sonrası uzlaşma) after the notice is served (additional art. 1).

What changed on 2 August 2024. Law 7524 art. 14 removed the tax itself from settlement. It now covers only tax-loss penalties and procedural penalties above a yearly revalued amount (additional art. 1, 8, 9, 11). Requests made before that date stay under the earlier rules if no settlement date had yet been given, a date had been given but the meeting was not held or was postponed, or the period for requesting had not expired (provisional art. 35). The regulations as read for this page, with their 2022 amendments, still speak of “tax and penalty”; the statute prevails. Penalties for acts under art. 359, penalties on those who took part in them, and penalties imposed after a preliminary finding under art. 370/b are outside settlement (additional art. 1).

Post-assessment settlement.

1. Identify the ground. The authority may settle where it is argued that the tax loss came from not fully grasping the law or from the error in art. 369, that there are tax errors (art. 116–118) or other material errors, or that court decisions and the authority differ on the point (additional art. 1). Agreement depends on the commission.
2. Apply in writing within 30 days. The request goes, within 30 days from the day after service, from the taxpayer or an official representative to the tax office or the commission secretariat; registered post or the interactive tax office may be used (Settlement Regulation art. 7, 9).
3. Attend. The meeting is notified at least 15 days ahead. The taxpayer may bring a representative of their professional chamber and a member of the accountancy profession qualified under Law 3568; they may speak but not sign (additional art. 1; Regulation art. 10). The commission with authority depends on the amount (art. 5, 6).
4. Outcome. An agreement is final and the matter cannot be taken to court (additional art. 6); payment is due on the statutory dates if the minutes were served before them, otherwise within a month of service (additional art. 8). If there is none, the commission’s final offer is recorded and the taxpayer can accept it in writing until the end of the court period; a second request for the same penalty is not possible (additional art. 1). If the court period has run out or fewer than 15 days remain, it becomes 15 days from service of the minutes recording failure (additional art. 7).

Settlement, suit and reduction interact. A taxpayer who asks for settlement in time can sue over that penalty only if settlement fails, and an earlier suit is not examined until settlement ends (additional art. 7). An agreed penalty receives no other reduction, and where the art. 376 reduction has been applied settlement does not apply; until the minutes are signed the taxpayer may withdraw and ask for the art. 376 reduction (additional art. 9). Additional art. 7 closes the court route only for the penalty put to settlement and does not bar a suit against the tax within 30 days. Because the regulations have not been updated for Law 7524, how the two routes run together needs separate confirmation.

Pre-assessment settlement. The Ministry may allow settlement before assessment over penalties to follow an inspection (additional art. 11). Under the Pre-assessment Settlement Regulation:

• A request can be made from the start of the inspection until the last inspection minutes; if the inspector invites the taxpayer, within 15 days of service of the invitation (art. 9, 11).
• It is in writing, made in person or through a representative holding a notarised power of attorney (art. 8). The Regulation does not say whether one made abroad qualifies (power of attorney guide).
• The meeting date and a report of the amounts at issue go to the commission and the taxpayer at least 15 days ahead; the inspectors cannot sit on the commission (art. 5, 6, 10, 13).
• Settlement is treated as not reached if the taxpayer does not attend, does not sign or signs under reservation (art. 16/3); the commission’s offer is accepted if the taxpayer says so in writing by the end of working hours on the last day of the period for suing over the later assessment (art. 16/9).
• If pre-assessment settlement fails, post-assessment settlement is no longer available; if it succeeds, the settled matter cannot be taken to court (VUK additional art. 11; Regulation art. 18).

Objecting to a payment order

The payment order. For a public receivable not paid by its due date the enforcement office (tahsil dairesi) serves a payment order requiring the debtor, within 15 days, to pay or to file an asset declaration (mal bildirimi). It states the debt, warns of enforcement and, if no declaration is made, of coercive imprisonment (hapisle tazyik) of up to three months (Law 6183 art. 55). Service and the counting of periods follow the VUK unless otherwise provided (art. 8). On a debtor’s death, heirs who have not refused the estate are also subject to the Law (art. 7; see inheritance).

Period and court. A person served with a payment order may object, within 15 days of service, that there is no such debt, that it has been partly paid or that it is time-barred (art. 58). The text says the objection goes to the “tax objection commission” (vergi itiraz komisyonu), an old expression. İYUK art. 37/c makes the tax court of the place of the office that issued the payment order competent for matters under Law 6183, and the Constitutional Court also speaks of an action against a payment order, so this page treats the objection as a suit in the tax court. Because the Law sets its own period, the 30 days in İYUK art. 7 do not apply (art. 7/1).

Limits. Only the three grounds are open. An objection to part of the debt must state which part and how much, or it counts as not made (art. 58). Complaints about the assessment itself need a tax suit within 30 days of the notice (VUK art. 377, 378). How far “no such debt” reaches has been argued in case law, which this page has not surveyed.

Effect on collection. Actions arising from collection do not stop it; a stay of execution is asked for separately (İYUK art. 27/4), and the Constitutional Court has noted that filing does not of itself stop collection. A stay needs harm that is hard or impossible to repair and a clearly unlawful act (art. 27/2), and is given against security unless the circumstances justify none (art. 27/6).

If the objection fails. Where an objection to the whole debt is rejected in whole or in part, the debtor must file an asset declaration within 15 days of service of the rejection; an objection to part of the debt does not extend that period (Law 6183 art. 58). The enforcement judge (icra tetkik mercii) orders coercive imprisonment (art. 60), and the enforcement office seizes assets (art. 62). The Constitutional Court annulled the 10 per cent surcharge on a failed objection (art. 58/5) on 21 April 2022.

Deferral of payment. If paying on the due date would put the debtor in serious difficulty, the receivable can be deferred (tecil) for up to 72 months with interest, on written request and against security (art. 48, as changed by Law 7582 of 21 May 2026). The security threshold and the delay-charge rate (art. 51) can be changed by Presidential decision and are not given.

Partners and managers. Limited company partners are liable for public debts the company cannot pay in proportion to their shares, legal representatives can be pursued personally, and so can the Turkish representatives of foreign entities (art. 35, mükerrer 35; see company law).

False invoice offences

What the law says. VUK art. 359 punishes the following acts concerning documents that must be kept and produced under tax laws:

Failing to produce books and documents to inspectors, when their existence is proved by notarial records or otherwise, counts as hiding them (art. 359/a). Where acts form part of one decision carried out over several years or periods, Criminal Code (TCK) art. 43 applies (art. 359).

Who decides. Because the upper limit is eight years at most, the criminal court of first instance (asliye ceza mahkemesi) tries these cases; the assize court (ağır ceza mahkemesi) takes offences carrying more than ten years (Law 5235 art. 11, 12, 14). The tax and the tax penalty are disputed separately in the tax court. For criminal procedure see criminal law.

Procedure. Inspectors who find offences under art. 359 report them directly to the public prosecutor’s office on the opinion of the report evaluation commission (rapor değerlendirme komisyonu); other inspecting officials report through the tax office directorate or regional finance office. A prosecutor who learns of the offence elsewhere asks the tax office to inspect, and prosecution depends on the inspection result being reported (art. 367).

Tax penalty and prison together. A sentence does not prevent the tax-loss or procedural penalty from also being imposed (art. 359, 367), and the penalties are not merged for repetition or aggregation (art. 340). The tax-loss penalty is three times the tax, once for those who took part (art. 344), and is outside settlement (additional art. 1). The invitation to explain (izaha davet, art. 370) is not available for these acts, with one exception: a taxpayer whose forged or misleading documents in a calendar year stay below a yearly revalued amount, or below five per cent of that year’s purchases, can be served with a notice of the preliminary finding; if the return is corrected and the tax paid with delay charges within 30 days, the tax-loss penalty is 20 per cent of the tax lost (art. 370/b).

Reductions and lapse.

• Voluntary disclosure (pişmanlık, art. 371). Those who report in line with art. 371 are not subject to art. 359 (art. 359). The petition must precede an inspection of the relevant tax and the detection of the offence, the return must be corrected within 15 days, and the tax paid with delay charges in the same period (art. 371).
• Reduction for payment (Law 7394, 2022). If the assessed tax with delay interest and charges in full, half the penalties and the charges on them are paid during the investigation, the sentence is halved; if paid during the trial before judgment, reduced by a third. If there is no assessed tax or related penalty, the sentence is halved (art. 359). One paragraph added to this provision was annulled by the Constitutional Court on 13 September 2023.
• Participants who gained nothing. Half the sentence is cancelled under the Criminal Code’s rules on participation (art. 360).

Limitation. The VUK sets no separate period, so TCK art. 66 applies and the period depends on the upper limit of the sentence: eight years where it does not exceed five years (art. 359/a), fifteen where it is over five and under twenty (art. 359/b) (TCK art. 66/1-d, e, 66/4). Interruption, suspension and the chain-offence rule depend on the facts of the case (TCK art. 67).

Tax inspection

Who and why. An inspection checks and secures the correctness of the tax due (VUK art. 134). It is carried out by tax inspectors, the most senior revenue official of the province or tax office directors (art. 135), who must show photographic official identification (art. 136). Anyone required to keep books and retain documents can be inspected (art. 137). No advance notice is needed, and an inspection can be made at any time until the assessment limitation period ends, even if an earlier inspection took place (art. 138).

Stages.

1. Start. An inspection runs on written assignment, and the taxpayer is told in writing of its subject and start (VUK art. 140/1). The Notice of Start of Inspection (incelemeye başlama bildirimi) states whether it is full or limited, the reason, subject, period and tax, and the taxpayer’s rights and duties; the inspection is confined to the subject and period assigned (Tax Inspection Regulation art. 6, 9, 11).
2. Books and documents. They are requested in writing, with at least 15 days, the place for production and the consequence of non-production (Regulation art. 12). Documents not produced on time without excuse count as not produced, and a good excuse earns a suitable extension (VUK art. 139); the tax base can then be estimated (art. 30/3).
3. Place. The inspection is mainly at the tax office, or at the workplace if the taxpayer asks in writing and the premises suit (art. 139; Regulation art. 13). If the taxpayer cannot be reached, it proceeds on the tax file and other sources (art. 12/6).
4. Minutes. Events can be recorded in minutes; the taxpayer’s objections and comments are written in them and the taxpayer must receive a copy (VUK art. 141). On request a draft is provided two days ahead, and the minutes must not record the inspector’s opinion (Regulation art. 16/2); the taxpayer is told that they serve as evidence (art. 16/5). Nobody can be forced to sign; if signing is refused, the books and documents concerned can be taken and kept until the assessed tax and penalties are final (VUK art. 141; Regulation art. 16/6).
5. Duration. A full inspection is meant to end within a year, a limited one within six months, a VAT refund inspection within three; extra time cannot exceed six months (two for refunds), and the reasons are given to the taxpayer in writing (VUK art. 140/6).
6. Report. A report evaluation commission reviews the report for compliance with the legislation, and the minutes record whether the taxpayer wants to be heard (VUK art. 140; Regulation art. 17/1-g). If nothing needs criticism the taxpayer is told in writing (art. 19/5); books and documents are returned within 15 days of the commission’s final assessment (art. 22). The tax office then assesses (Objecting to a tax penalty).

Before an inspection. A taxpayer with a preliminary finding against them can be invited to explain, with 30 days from service. If the explanation is inadequate, correcting the return and paying the tax with delay charges within 30 days of the evaluation letter brings a tax-loss penalty of 20 per cent of the tax lost; the invitee cannot rely on voluntary disclosure for that finding (art. 370). A voluntary disclosure petition made in time can remove the tax-loss penalty altogether; the conditions are in art. 371.

Taxpayers living abroad

• Service. Service abroad goes through the competent authority of the country concerned; where there is a treaty or local law permits, the Turkish consulate asks that authority to serve. If the addressee is a Turkish citizen it can also go through the consulate, which sends, by a method local law allows, a notice stating the subject, the issuing authority and a warning that service will be deemed made if no application follows within 30 days. Once delivery is documented and nobody applies to the consulate within 30 days, service is deemed made at the end of the 30th day; a person who applies and refuses the document is served on the date of the record (VUK art. 97).
• If service is impossible. Service is by public notice (art. 103), and copies are also posted to the known foreign address (art. 104). A person who does not apply or give an address within a month of the notice is deemed served at the end of that month (art. 105, 106). Whether the extra 15 days in İYUK art. 7/3 apply on top is not settled here.
• Address in Türkiye. The declared business address and the residence in the address register are known addresses (art. 101), so service at an old Turkish address can start the period after someone has moved abroad.
• Electronic service. Corporation taxpayers, income taxpayers assessed on actual figures for commercial, agricultural or professional income and the other groups listed in art. 107/A must use the electronic service system; service is deemed made at the end of the fifth day after it reaches the system (art. 107/A, as rewritten by Law 7587, from 1 July 2026).
• Petition and representation. A petition can be lodged with a Turkish consulate abroad (İYUK art. 4), and the case opens on the registration date (art. 6). Acting in Türkiye needs a power of attorney (giving a power of attorney from the UK).
• Security. Where a debtor has no residence in Türkiye and collection is endangered, the enforcement office may demand security (Law 6183 art. 9); lack of a known residence is a ground for precautionary attachment (art. 13).
• Double taxation. A taxpayer who claims to be taxed contrary to an applicable double taxation treaty can apply to the Revenue Administration under the mutual agreement procedure; the treaty sets the period, and if it has none the application should be made within three years of first learning of the act. It suspends the period for suing but not collection (VUK additional art. 14, 15, 18).

Deadlines in one place

Documents to prepare

• The notice or payment order and proof of service (receipt, envelope, e-service record).
• The inspection report, minutes and Notice of Start of Inspection.
• Returns, accrual slips and payment receipts for the period.
• Books, invoices, delivery notes, contracts, bank statements and correspondence; for a false invoice allegation, transport, stock and payment records showing the goods or services were actually received.
• Identity document or passport, tax number and records of addresses in Türkiye.
• A power of attorney if a representative will act; one made abroad may need an apostille and a sworn translation.