---
title: "IIT Amount in Kazakhstan in 2026: How to Determine and Verify the Calculation"
country: KZ
lang: en
author: Сапа Т.И. (https://buhgpt.kz/authors/sapa-ti)
date: 2026-10-13
canonical: https://buhgpt.kz/suraqtar/summa-ipn-v-kazahstane-v-2026-godu-kak-opredelit-i-prover-en
source: BuhGPT
---

# IIT Amount in Kazakhstan in 2026: How to Determine and Verify the Calculation

> **TL;DR:** What the IIT Amount Means The IIT amount is the final individual income tax calculated in respect of a specific individual's income for the relevant tax period. There is no single amount for all taxpayers: the calculation result depends on the composition of income, the recipi

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What the IIT Amount Means

The IIT amount is the final individual income tax calculated in respect of a specific individual's income for the relevant tax period. There is no single amount for all taxpayers: the calculation result depends on the composition of income, the recipient's status, the taxation procedure for the payment, the applicable rate, and deductions supported by documents.

Therefore, it is not sufficient for an accountant to multiply all accrued income by the rate. First, it is necessary to determine the nature of the payment, the person responsible for calculating the tax, the composition of taxable income, and the documentary grounds for applying deductions. The rate and calculation procedure are selected in accordance with the provisions of the Tax Code applicable to the relevant income and tax period.

If the calculation is performed for 2026, settings, rates, and deduction parameters cannot be carried over automatically from the previous period. The accountant should verify the tax period, payment date, rules in effect on that date, and accounting system settings. When recalculating prior periods, the dates of income accrual and payment, as well as the rules applicable to the relevant transactions, must be analyzed separately.

How an Accountant Should Determine the IIT Amount

It is convenient to conduct a practical review sequentially:

- Identify the recipient and type of income. It is necessary to determine the individual's status and the documentary basis for the payment: employment relations, a civil law contract, entrepreneurial activity, or another type of income. The name of the accrual in the software must correspond to the actual basis for the payment and the source documents.
- Determine the person responsible for the calculation. It is necessary to establish who is required to calculate IIT on the specific payment. This conclusion is made based on the provisions relating to the identified type of income, rather than solely on how the transaction is recorded in the accounting system.
- Determine taxable income. The accrued income must be reconciled with the amount used to calculate IIT. If individual accruals are accounted for under different rules, they are analyzed separately while maintaining their link to the source documents, payment date, and tax period.
- Verify eligibility for deductions. For each deduction, its type, basis, application period, and supporting documents should be established. A deduction entry in the software does not in itself confirm that its application is justified.
- Select the applicable rate. The rate is determined based on the identified type of income and tax period. If the calculation includes income subject to different taxation procedures, each category is reviewed separately, after which the overall total is reconciled.
- Check the arithmetic. The verification calculation should separately show the initial income, the amounts taken into account when determining taxable income, the deductions applied, the tax base, the rate, and the final IIT. This sequence makes it possible to identify the stage at which the discrepancy arose.
- Reconcile the calculation with accounting records and tax reporting. The amounts of income, deductions, tax base, and IIT are reconciled with source documents, accounting registers, payslips, and the relevant tax returns. The review is performed not only for the overall total but also for each individual, type of income, and period.

The general review logic is as follows: first, the income taken into account when calculating IIT is determined; then, the adjustments and deductions provided for the specific case are applied; after that, the applicable rate is applied to the resulting tax base. The composition of each element must be determined in accordance with the rules applicable to the identified type of income and tax period.

During a manual review, it is important to reproduce the calculation in the same sequence prescribed for the income concerned. Simply comparing the final amount with a percentage of accrued income does not make it possible to verify the composition of the tax base, the application of deductions, rounding, or the allocation of accruals between periods.

Reporting IIT in Tax Forms

The IIT amount is reported in the tax form applicable to the relevant taxpayer, type of income, and reporting period. Before completing the form, the accountant must determine whose liability is being reported and verify the type of income, period, and basis for the calculation.

The figures in the return or calculation are prepared based on accounting data and documents. For reconciliation purposes, it is useful to prepare a register by individual that separately shows accrued income, taxable income, deductions, the tax base, and the IIT calculated, withheld, and remitted. The register data are allocated among the lines and appendices of the applicable form in accordance with its structure.

Amounts cannot be combined merely because they were paid to the same individual. If payments relate to different periods, have different grounds, or are accounted for under different calculation rules, each type of income must first be reviewed separately. The totals are then reconciled with the figures in the tax form.

If the amount paid or withheld exceeds the amount confirmed by the calculation, the source data, payment documents, reporting period, and status of settlements with the state budget should first be checked. A decision on further action is made after the cause of the discrepancy and the nature of the amount have been established.

Before filing the tax return, the tax and reporting periods, identification details of the individual and the organization, type of income, and amount of the liability should be checked. An error in these details may cause a discrepancy even if the IIT calculation is arithmetically correct.

If the tax return is prepared after correcting an accrual or deduction, the accountant should regenerate the accounting and tax registers and verify whether the change has been reflected in the required period. Correcting the source document without updating the register and regenerating the form may leave the previous amount in the tax return.

What to Check in the Accounting Records and 1C

If the IIT amount in the software differs from the expected amount, the review should begin with the initial calculation parameters. Particular attention should be paid to the type of accrual, the income recipient's status, the payment date, the document registration period, the method used to record the income, and the deduction settings.

For a payment under a civil law contract, the calculation procedure applicable specifically to that payment must be determined separately. It cannot automatically be treated as salary merely because the income was accrued to an individual. The contract, type of accrual, period, payment date, and income recipient must be specified correctly in the software.

If the calculation changed after a new application or deduction entry was added, the accountant should check:

- the start and end dates of each entry;

- whether a previously registered deduction has ceased to apply;

- whether the application corresponds to the specific individual;

- whether the correct type of deduction was selected and the basis for its application was specified;

- whether the document relates to the required type of income;

- whether the month in which the deduction is applied matches the calculation period;

- whether the same deduction has been applied more than once;

- whether the document has been posted and included in the calculation sequence;

- whether the calculation was performed before the document that changes the source data.

After correcting the source data, the calculation should be performed again and a detailed breakdown generated. It is useful to show separately the income for each accrual, the amounts taken into account for taxation purposes, the deductions applied, the tax base, the rate, and the calculated IIT. This makes it possible to determine the cause of the discrepancy without manually changing the final amount.

If the manual and software calculations differ, they should be compared line by line. First, the composition of income is checked, followed by deductions and their validity periods, and then the tax base and rate. Rounding, document dates, and the result of recalculating previous months are checked separately.

When updating the configuration or changing the settings, it is recommended to recheck the calculation for a specific employee or another income recipient. The verification calculation should use the same documents, dates, and parameters as the actual calculation. Comparing only the organization's overall totals may conceal a discrepancy relating to a specific individual.

For internal control purposes, it is convenient to retain the calculation breakdown together with the documents supporting the income and the grounds for deductions. When closing the period, the initial calculation, subsequent changes, and the amount reported in the tax return can then be reconciled.

Frequently Asked Questions

Can the IIT amount be determined solely from the amount of accrued income? — No. To perform the calculation, it is necessary to establish the type of income, the recipient's status, the tax period, the applicable rate, and information about deductions. It is also necessary to determine who is responsible for calculating the tax on the relevant payment.

How can the IIT amount calculated by the software be verified? — Generate a detailed breakdown and sequentially reconcile the accrued income, the amounts taken into account for taxation purposes, deductions, the tax base, the rate, and the final tax. Then compare the result with the source documents, registers, and figures in the tax form.

Must income be separated if different calculation procedures apply? — Yes. Such income should first be calculated and reviewed separately. This makes it possible to determine the figures for each type of income correctly and transfer them to the appropriate lines of the tax return.

What should be done if an excess IIT amount is identified? — First, check the source calculation, reporting period, payment documents, and status of settlements with the state budget. Further actions are determined after the amount and the reason for the excess have been confirmed.

Why might a deduction not be included in the IIT calculation in 1C? — This may be caused by an incorrect validity period for the entry, a mismatch between the application and the individual, an incorrectly selected type of deduction, an incorrect document posting sequence, or failure to recalculate after the source data were changed.

Why did the IIT amount for the previous month change after recalculation? — The recalculation may have included a document entered later, a change in the composition of income, or a different deduction start date. To establish the cause, the source documents, their posting dates, and the calculation breakdowns before and after recalculation must be compared.

Is it sufficient to check the organization's total IIT amount? — No. The overall total may match even when there are offsetting discrepancies among different individuals. The review should be performed for each income recipient, type of payment, and tax period.

Sources

The articles of the Tax Code cited in the original list do not establish the procedure for calculating individuals' IIT: Article 317 governs the deduction of a subsoil user's expenses for training Kazakhstani personnel and developing the social sphere of the regions (Article 317 of the Tax Code of the RK), Article 356 governs the calculation of corporate income tax withheld at the source of payment (Article 356 of the Tax Code of the RK), Article 808 governs the calculation of the maximum amount of net income distribution for excess profits tax (Article 808 of the Tax Code of the RK), while Article 833 establishes the transitional procedure for reviewing applications and claims for refunds of excess VAT submitted before 1 January 2026 (Article 833 of the Tax Code of the RK). Therefore, these provisions were not used as a legal basis for determining the IIT amount, applying deductions, or completing IIT tax returns.

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