Dominican Republic Tax Deadlines: Key Dates Companies Must Know

For companies operating in the Dominican Republic, tax compliance is built around several recurring filing and payment dates rather than a single annual deadline. The most important recurring dates generally fall on the 10th, 15th and 20th of the month, while the corporate Income Tax return is normally due 120 days after the company’s fiscal year-end. Other obligations, such as the tax on assets, related-party information and specialized reports, follow their own schedules.

The Dirección General de Impuestos Internos (DGII) is the Dominican tax authority responsible for administering the principal domestic taxes covered by this calendar. Its published schedules are the appropriate reference for determining the applicable deadline because holidays, weekends, extensions, regulatory changes and taxpayer-specific obligations can affect the date. The following overview is therefore a technical reference rather than a substitute for checking the official DGII calendar for the relevant tax period.

The Main Tax Deadlines Companies Should Track

These are the principal dates that create the recurring tax calendar for many companies. They do not mean that every company has every obligation. The applicable duties depend on the company’s activities, tax status, transactions, employees, fiscal year-end and other circumstances. The DGII expressly describes corporate tax obligations as depending on the taxpayer’s economic activity.

The 10th: Monthly Withholding Tax Deadlines

The 10th day of the month is a key deadline for companies acting as withholding agents. The DGII identifies the IR-3 declaration for salary withholdings and the IR-17 declaration for other withholdings and complementary remuneration as obligations generally due by the 10th.

IR-3 Salary Withholdings

The IR-3 is the monthly declaration associated with income-tax withholdings from employees. A company that has employees subject to the applicable withholding rules must account for the amounts withheld and remit them within the prescribed period.

The recurring deadline is the 10th of the month following the period to which the withholding relates. The DGII’s general payment schedule identifies IR-3 as due no later than the 10th of each month.

IR-17 Other Withholdings And Complementary Remuneration

IR-17 covers other income-tax withholdings and complementary remuneration subject to the relevant rules. Like IR-3, its general deadline is the 10th day of the month.

The important point is that the deadline concerns the reporting and payment of amounts that the company has withheld or is required to report. The existence, rate and nature of a withholding obligation depend on the underlying payment and the applicable Dominican tax rules; the calendar itself does not determine whether a particular transaction is subject to withholding.

The 15th: Information Returns And Income-Tax Advances

The 15th of the month is another important date in the corporate tax calendar. Two recurring categories are particularly relevant: monthly information submissions and income-tax advances for taxpayers subject to that regime.

Forms 606, 607, 608 And 609

The DGII requires applicable taxpayers to submit several electronic information formats concerning their transactions. These include Form 606 for purchases, Form 607 for sales, Form 608 for canceled fiscal receipts and Form 609 for certain payments abroad. The DGII states that these forms are generally submitted during the first 15 days of the month following the month in which the relevant transaction occurred.

The distinction between an information filing and a tax payment is important. These formats primarily provide transactional information to the tax administration. They can nevertheless affect tax compliance because the information reported through them can be relevant to the taxpayer’s ITBIS credits, deductible costs and expenses, and withholding records.

The DGII specifically notes that Form 606 must be submitted before the ITBIS filing deadline when necessary for the corresponding input-tax credits to be accepted.

Income-Tax Advances

Companies subject to corporate income-tax advances generally have a recurring payment obligation during the fiscal year. The DGII’s taxpayer calendar identifies the 15th as the deadline for the monthly corporate Income Tax advance, where applicable.

An advance is not a separate final income tax replacing the annual IR-2. It is a payment made against the taxpayer’s income-tax liability under the applicable advance-payment system. Its treatment and calculation therefore need to be distinguished from the annual determination of the company’s taxable income.

The 20th: ITBIS Filing And Payment

The 20th of the following month is the principal recurring deadline for ITBIS, the Dominican Republic’s value-added tax on the transfer of industrialized goods and services and related taxable transactions.

The DGII states that the ITBIS return, Form IT-1, must generally be presented and the resulting tax paid no later than the 20th day of each month.

For example, the ITBIS relating to a monthly tax period is normally reported and paid during the following month, with the 20th serving as the ordinary deadline. The same basic calendar applies regardless of whether the company has a monthly tax period with a significant liability or a period in which the resulting amount is different; however, the filing obligation itself depends on the taxpayer’s applicable status and activities.

ITBIS should not be confused with income tax. ITBIS is an indirect tax associated with taxable transactions, while corporate Income Tax is based on the company’s taxable income. They consequently have different returns, calculations and deadlines.

The Annual Corporate Income Tax Deadline

For companies, the principal annual Income Tax declaration is the IR-2. The DGII states that legal entities must file and pay the resulting corporate Income Tax no later than 120 days after their fiscal year-end.

This rule means that there is no single annual IR-2 deadline for every Dominican company. The deadline depends on the fiscal closing date authorized or applicable to the company.

The DGII publishes the corresponding calendar dates for each fiscal closing. For example, its 2026 information identifies April 30, 2026, as the deadline for companies with a December 31, 2025 year-end; July 29, 2026, for companies closing on March 31, 2026; and October 28, 2026, for companies closing on June 30, 2026.

The exact date should always be checked against the applicable DGII calendar because a deadline that falls on a weekend or holiday can be moved to the next business day. The DGII expressly states this rule for the relevant filing and payment deadlines.

Tax On Assets: A Deadline Linked To The Annual Return

The Dominican tax system also includes the Tax on Assets for entities to which the tax applies. The corresponding declaration is generally due within the same 120-day period following the company’s fiscal year-end.

The DGII states that the Tax on Assets declaration is presented on the same deadline as the corporate Income Tax return. Where a Tax on Assets amount is payable, it is generally paid in two equal installments: the first on the IR-2 deadline and the second six months after the first installment’s due date.

The interaction between Income Tax and the Tax on Assets is also important. According to the DGII, where the Income Tax is equal to or greater than the Tax on Assets, the Tax on Assets payment obligation can be extinguished under the applicable rules. Where the Tax on Assets exceeds the Income Tax, the difference is paid according to the prescribed installment structure.

Because this calculation can involve specific statutory rules and exemptions, the deadline alone should not be interpreted as evidence that every company owes a Tax on Assets payment.

Related-Party Reporting And The DIOR Deadline

Companies subject to Dominican transfer-pricing rules may have an additional annual information obligation known as the Declaración Informativa de Operaciones entre Relacionados (DIOR).

The DGII states that, from fiscal year 2022, the DIOR is due on the same date as the corporate Income Tax return, meaning 120 days after the company’s fiscal year-end.

This deadline should be distinguished from the obligation itself. Not every company is required to submit a DIOR simply because it is incorporated in the Dominican Republic. Applicability depends on the company’s related-party transactions and the transfer-pricing rules governing the taxpayer.

Other Information-Reporting Deadlines

The DGII administers additional information formats for specific sectors and transaction types. The deadlines therefore extend beyond the standard 10th, 15th and 20th calendar.

For example, the DGII identifies Forms 612 and 613 for certain foreign-exchange operations as subject to a deadline of up to 60 days after the taxpayer’s closing date. Forms 615 and 616, applicable to certain insurance and health-related reporting, have deadlines within the 15-day period for ITBIS taxpayers. Form 623, concerning certain state withholding information, has a deadline of 120 days after the close for legal entities and 90 days for individuals.

These specialized deadlines illustrate why a company should not rely on a generic list of monthly tax dates without first identifying the obligations generated by its industry and transactions.

How The 2026 DGII Calendar Should Be Used

The DGII publishes an annual Taxpayer Calendar identifying specific dates for filing and payment obligations. The 2026 calendar, for example, lists monthly deadlines for ITBIS, salary withholdings, other withholdings, income-tax advances, transactional information formats and various sector-specific taxes.

The calendar is more useful than simply memorizing the 10th, 15th and 20th because it accounts for the actual calendar and identifies the particular obligations falling due on each date. It can also show dates for obligations that do not follow the standard monthly pattern.

A company should therefore treat the recurring dates as a framework rather than as an immutable annual timetable. The official DGII calendar for the relevant year and the taxpayer’s own obligations remain the controlling reference points.

What Happens When A Deadline Falls On A Non-Business Day?

Dominican tax deadlines can be affected by weekends and official holidays. The DGII states that when the deadline for a filing or payment coincides with a weekend or holiday, the deadline is extended to the next business day.

This rule makes it important to check the actual calendar date rather than assuming that the nominal day of the month will always be the final day for compliance. The annual DGII calendar incorporates the relevant dates and should be checked for the applicable tax period.

Extensions And Changes To Published Deadlines

A published deadline should not be treated as permanently fixed. The tax administration can issue extensions or other changes affecting the date on which an obligation must be filed or paid.

The DGII’s own guidance recognizes that when the tax administration extends an Income Tax filing and payment deadline, the corresponding Tax on Assets deadline is also extended for the same period.

For that reason, companies should verify the applicable date immediately before filing or making a payment, particularly when the deadline is close to a holiday, when the DGII has issued a special extension or when a regulatory change affects the tax period.

A Practical Annual Deadline Framework

Although this article is focused exclusively on deadlines rather than procedures, the calendar can be organized into four recurring windows:

• By the 10th: monthly salary withholdings through IR-3 and other withholding or complementary-remuneration obligations through IR-17, when applicable.
• By the 15th: monthly transactional information through applicable Forms 606, 607, 608 and 609, together with corporate Income Tax advances where applicable.
• By the 20th: monthly ITBIS filing and payment, when applicable.
• 120 days after fiscal year-end: annual corporate Income Tax, the first Tax on Assets installment where applicable and the DIOR for taxpayers subject to the related-party reporting rules.

This framework provides a useful way to understand the tax calendar without implying that every company has all of these obligations. A taxpayer’s actual calendar can contain additional deadlines based on its activities, transactions, employees, tax regime and regulatory status.

Why The Deadline Is Not The Same As The Tax Liability

A filing deadline determines when a return or payment must be submitted. It does not by itself establish whether a company owes tax or the amount owed.

For example, a company can have an ITBIS filing obligation for a month even if the resulting tax position differs from that of another taxpayer. Similarly, the IR-2 deadline applies to companies required to file the corporate Income Tax return, but the amount payable depends on the company’s taxable income and applicable rules.

This distinction matters because a calendar is a compliance tool, not a calculation of tax liability. The applicable tax treatment must be determined separately under Dominican tax legislation and the rules administered by the DGII.

Frequently Asked Questions

What is the main monthly tax deadline for ITBIS in the Dominican Republic?

The general ITBIS deadline is the 20th day of the month following the relevant monthly tax period. The IT-1 return and the resulting payment are generally due by that date.

When are employee withholding taxes due?

The IR-3 declaration for salary withholdings is generally due by the 10th of each month, when the obligation applies.

When is IR-17 due?

The IR-17 declaration covering other withholdings and complementary remuneration is generally due by the 10th of each month.

When are Forms 606, 607, 608 and 609 due?

The DGII generally requires Forms 606, 607, 608 and 609 to be submitted during the first 15 days of the month following the month of the relevant transactions.

When is a company’s annual Income Tax return due?

The IR-2 for a legal entity is generally due 120 days after the company’s fiscal year-end. The exact calendar date therefore depends on the company’s fiscal closing date.

Is the Tax on Assets due on the same date as the IR-2?

The Tax on Assets declaration generally shares the IR-2 deadline. Where a Tax on Assets amount is payable, the first installment is generally due on that date and the second installment six months later, subject to the applicable rules.

When is the DIOR due?

For taxpayers required to submit the DIOR, the deadline is generally 120 days after the fiscal year-end, corresponding to the IR-2 deadline under the current framework described by the DGII.

Can Dominican tax deadlines change?

Yes. The DGII can issue extensions or changes, and weekends or holidays can affect the operative deadline. Companies should verify the official DGII calendar and any applicable notices before relying on a particular date.

The Bottom Line

The Dominican corporate tax calendar revolves around several recurring deadlines: the 10th for key withholding declarations, the 15th for important information submissions and certain income-tax advances, and the 20th for ITBIS. The annual corporate Income Tax return generally follows a different rule, with the IR-2 due 120 days after the company’s fiscal year-end. Tax on Assets and DIOR can also be tied to that annual deadline when applicable.

These dates should be treated as a structured reference, not as permanent dates that can be relied upon without verification. The DGII publishes an annual taxpayer calendar and can establish extensions or changes, while a company’s own activities determine which obligations apply. Before filing or paying, companies should therefore verify the official DGII calendar, the relevant tax period and any current notices or regulatory changes governing the specific obligation.