Sole Proprietor Reporting for Q1 2026: Who Must File, What to Submit, and Key Deadlines

Not all sole proprietors are required to file reports for the first quarter of 2026. Sole proprietors in Group 3, sole proprietors with employees or payments to individuals, as well as VAT payers who file monthly returns, are required to file reports.

As a general rule, sole proprietors in Groups 1 and 2 do not file quarterly returns, but there are exceptions. In this article, we’ll explain who needs to file which reports, by what deadlines, and what to check before submission to avoid penalties.

Key deadlines for Q1 2026

In 2026, the standard rule of the Tax Code applies: if the deadline falls on a weekend or public holiday, it is moved to the next working day.

Since May 10, 2026, falls on a Sunday, the deadline for submitting quarterly reports is moved to May 11, 2026.

Let’s take a closer look at which categories of sole proprietors report for Q1 2026.

Group 3 sole proprietors: when and which declaration to submit

Group 3 sole proprietors report quarterly. Therefore, based on the results of January, February, and March 2026, it is necessary to submit the single tax declaration by May 11, 2026.

If a Group 3 sole proprietor had no income in Q1, it is advisable to submit a zero declaration to avoid unnecessary questions from the tax authorities.

🔍 What to check before submission

Before submitting the declaration, check:

1. Total income. Summarize all income for January–March: funds received to the account, cash, and payments via payment services.
2. Tax rate. Group 3 sole proprietors may operate at the following rates:
   • 3% — if you are a VAT payer
   • 5% — if without VAT
3. Military levy. In 2026, entrepreneurs also pay a military levy. For Group 3 sole proprietors, it is 1% of income.
4. Electronic signature (QES). Make sure the electronic signature certificate is valid.

Before submission, it is worth reconciling the income amount in the declaration with the bank statement. Discrepancies may become a reason for additional questions from the tax authorities.

Sole proprietors with employees or payments to individuals

If in Q1 2026 a sole proprietor:

• paid salaries to employees;
• paid remuneration under civil law contracts;
• made other payments to individuals

— it is necessary to submit the Tax Calculation of income amounts (the so-called “unified reporting”). This report is submitted quarterly, and the deadline for Q1 2026 is May 11, 2026.

🔸What is included in unified reporting

The Tax Calculation combines data on:

• PIT;
• military levy;
• SSC.

This report includes:

1. The main part of the calculation. Contains total amounts of accrued income and taxes.
2. Appendix D1. Information on SSC accruals for each employee (separately for each month of the quarter).
3. Appendix 4DF. Data on individuals’ income, withheld PIT, and military levy.

🔸What to pay attention to before submission

Accuracy in details is important in this reporting. The most common problems arise due to:

• errors in employees’ tax identification numbers;
• incorrect income codes;
• confusion in accrual months;
• outdated form.

Such errors may lead to rejection of the report or the need to submit a corrected calculation.

VAT-paying sole proprietors

For VAT payers, reporting is submitted monthly, not quarterly. In the first quarter of 2026, they must submit three declarations for each month.

Submission deadlines:

• for January — by February 20, 2026;
• for February — by March 20, 2026;
• for March — by April 20, 2026.

✅ Checklist before submitting a VAT declaration

Group 1–2 sole proprietors: is it necessary to report for Q1?

As a general rule, Group 1 and 2 sole proprietors submit a declaration once a year. Therefore, they usually do not submit a quarterly declaration for Q1 2026.

The annual declaration for 2026 will need to be submitted in 2027.

However, there are situations when a report must be submitted earlier. A quarterly declaration may be required if:

• the income limit for your group is exceeded;
• there is a transition to another taxation system;
• the sole proprietor terminated activity in January–March;
• there was a transition to another single tax group.

If Group 1–2 sole proprietors have employees, the single tax declaration remains annual, but the Tax Calculation for salaries is submitted quarterly.

How to prepare for reporting

To avoid mistakes, it is worth following a simple algorithm:

1. determine all factors that affect reporting (sole proprietor group, наличие employees, VAT);
2. check reporting deadlines;
3. reconcile income with bank statements;
4. make sure the QES is valid;
5. submit reports in advance, not on the last day.

Electronic reporting services help submit quarterly reports faster: they automatically provide up-to-date forms, highlight errors, and allow you to immediately receive receipts from the tax authorities.

In Vchasno.Zvit, you can generate the required reports for your sole proprietor group, sign them with a QES, and receive receipts from the tax authorities in one account.

What to do if the report was not accepted or the deadline was missed

Even experienced accountants sometimes receive a rejection from the tax authorities. In such a situation, it is important to act quickly.

1. Check Receipt No. 1. It confirms that the report has been delivered to the tax server. If it is missing, the document was not sent.
2. Check Receipt No. 2. It contains the result of verification: “Accepted” or “Not accepted”.

⚠️ If the report was not accepted

Receipt No. 2 indicates the error code. The most common reasons for rejection:

• outdated form of the document;
• error in the reporting period — for example, “year” selected instead of “quarter”;
• problems with the QES — the certificate may be expired or a legal entity signature was used.

Before the deadline expires, the report can be submitted an unlimited number of times. The last document with the status “Reporting” is taken into account.

⌛ If the deadline was missed

If you missed the deadline, submit the report as soon as possible. The penalty is 340 UAH for the first violation, and 1020 UAH for a repeated violation within a year.