Installment Tax

The Kenya Revenue Authority (KRA) continues to emphasize compliance with Installment Tax obligations, a critical component of Kenya's income tax regime. This advance tax payment system, governed by the Income Tax Act (Cap 470), requires individuals and businesses with an annual tax liability exceeding KES 40,000 to periodically remit estimated income tax. Recent KRA public notices highlight the introduction of an Automated Payment Plan (APP) for settling outstanding tax liabilities in installments, alongside stricter iTax system enhancements for compliance. Practitioners must guide clients through calculation methods, payment schedules, and the severe penalties for non-compliance, including late payment and underpayment, while leveraging new digital solutions for efficient tax management.

The Kenya Revenue Authority (KRA) consistently issues public notices to remind taxpayers of their obligations, with Installment Tax being a recurring focus. This advance tax payment mechanism is a cornerstone of Kenya's income tax framework, designed to ensure a steady flow of government revenue throughout the financial year while easing the burden on taxpayers by allowing them to spread their tax liabilities. For legal professionals and their clients, understanding the nuances of Installment Tax is not merely a matter of compliance but a strategic imperative to avoid significant penalties and maintain good standing with the tax authority.

This article delves into the legal and practical aspects of Installment Tax in Kenya, drawing from statutory provisions, KRA guidelines, and recent administrative developments. It aims to provide a comprehensive overview for practising attorneys, tax consultants, and other legal professionals, covering who is liable, how the tax is calculated, payment schedules, and the consequences of non-compliance. Special attention will be given to recent KRA initiatives, such as the Automated Payment Plan, which seek to streamline tax administration and offer new avenues for managing tax arrears.

Installment Tax in Kenya is primarily governed by the Income Tax Act (Cap 470), specifically Section 12, which outlines the requirements for advance tax payments, and Section 92, which addresses the balance of tax. This regime mandates that individuals and entities whose estimated income tax liability for a given year exceeds KES 40,000 must pay their tax in advance through periodic installments. The system is a departure from a single lump-sum payment at the end of the financial year, promoting better cash flow management for both the government and taxpayers.

Historically, the KRA has continuously refined its approach to tax administration, leveraging technology through platforms like iTax for registration, filing, and payment processes. Over the years, legislative changes, such as those introduced by the Finance Act, 2020, have also impacted the Installment Tax landscape, notably with the introduction of Minimum Tax, which is also payable in installments. These continuous adjustments underscore the dynamic nature of Kenya's tax environment and the KRA's commitment to enhancing compliance and revenue collection.

The obligation to pay Installment Tax extends to individuals, companies, and partnerships whose projected annual tax liability surpasses the KES 40,000 threshold. Exemptions generally apply to employees whose income is solely from employment and is fully covered by Pay-As-You-Earn (PAYE), or individuals whose non-PAYE income tax liability falls below the threshold. Taxpayers have two primary methods for calculating their Installment Tax: the 'Prior Year Basis,' which involves taking 110% of the previous year's tax liability, or the 'Current Year Basis,' which requires estimating the current year's profit and tax payable, net of any expected withholding tax. The latter method is particularly beneficial for new businesses or those transitioning from losses to profitability, allowing for a more accurate reflection of current financial performance.

For most taxpayers, Installment Tax is paid in four equal installments of 25% each, due on the 20th day of the 4th, 6th, 9th, and 12th months of their year of income. However, the agricultural sector benefits from a modified schedule, paying 75% by the 9th month and the remaining 25% by the 12th month, acknowledging the seasonal nature of their income. Any 'Balance of Tax' – the difference between the actual tax liability and the total Installment Tax paid – must be settled by the end of the fourth month following the financial year-end.

Non-compliance carries severe financial repercussions. Late payment of Installment Tax attracts a penalty of 5% on the unpaid amount, coupled with interest at 1% per month until the outstanding amount is fully settled. Furthermore, an underpayment penalty of 20% is levied on the shortfall if the total Installment Tax paid is less than 80% of the actual tax liability for the year. Late filing of returns also incurs penalties, which vary depending on whether the taxpayer is an individual or a non-individual.

A significant recent development is the KRA's introduction of an Automated Payment Plan (APP) in November 2025. This system-driven solution allows eligible taxpayers to settle confirmed outstanding tax liabilities, including principal tax, penalties, and interest, through structured monthly installments over a maximum period of six months. Eligibility for the APP is contingent on conditions such as possessing a valid KRA PIN, being iTax compliant, having a confirmed liability not under litigation, and demonstrating a genuine inability to settle the full amount at once. Failure to adhere to the agreed payment schedule under the APP can lead to its termination and trigger further enforcement actions, including the revocation of a Tax Compliance Certificate. This initiative, alongside stricter eligibility requirements for Tax Compliance Certificates and the need for KRA approval for adjustment vouchers, signifies a concerted effort by the KRA to enhance compliance and data integrity within the tax system.

The Installment Tax regime in Kenya remains a critical area of focus for the KRA, with ongoing efforts to streamline processes and reinforce compliance. Legal practitioners must ensure their clients are fully aware of their obligations under the Income Tax Act (Cap 470), particularly regarding the accurate estimation of income, adherence to payment deadlines, and the severe penalties associated with late payment or underpayment. The recent introduction of the Automated Payment Plan offers a crucial lifeline for taxpayers facing difficulties in settling their liabilities, providing a structured approach to manage arrears and avoid more stringent enforcement actions.

Practitioners should proactively advise clients on leveraging the iTax platform for managing Installment Tax, including the careful preparation of estimates and timely submission of payments. Furthermore, staying abreast of KRA public notices and legislative amendments, such as those impacting rental income or the application of adjustment vouchers, is paramount. As the KRA continues to enhance its digital infrastructure and enforcement mechanisms, a proactive and informed approach to Installment Tax compliance will be essential for all businesses and individuals operating within the Kenyan jurisdiction.