Oman Personal Income Tax 2028: What HR and Payroll Teams Need to Prepare Now

Oman’s personal income tax starts on 1 January 2028.

That sounds far away. For HR and payroll teams, it is closer than it looks.

The tax will not only change what some people pay. It will change how employers collect income data, run payroll, withhold tax and keep records. The data behind your first 2028 payroll is being created today.

Oman introduced the Personal Income Tax (PIT) Law through Royal Decree 56/2025. The rate is 5%, and the threshold is OMR 42,000 a year. The Tax Authority says about 99% of the population will not be subject to the tax. So most of your employees may never pay it. But your payroll still has to show who does, and why.

This guide explains PIT from an HR and payroll point of view. It covers what the law confirms, what employers should prepare, and what is still waiting for official guidance.

This article reflects the law and Tax Authority information available in September 2026. Some procedures depend on executive regulations and official guidance. It is general information, not tax advice.

What is Oman’s Personal Income Tax Law?

Royal Decree 56/2025 introduced the law. It was published in the Official Gazette on 30 June 2025 and takes effect on 1 January 2028.

The law does not treat salary as the only income. It also covers self employment, rental income, royalties, interest, dividends and other investment returns, gains from selling property, pensions, end of service benefits, prizes, gifts and board remuneration.

That matters for HR. Your team sees one slice of an employee’s income: what the company pays. The law can look at the whole picture. Payroll is an important part of PIT, but it is not all of it.

When does it start, and when is the first return due?

The first tax year runs from 1 January 2028 to 31 December 2028. A person who must file has six months after the year ends. That points to 30 June 2029, subject to the procedures the Tax Authority sets.

So do not wait for the first 2028 payroll. The data that payroll needs will be created months or years earlier.

How the OMR 42,000 threshold works

This is the biggest point of confusion. People hear “the tax starts at OMR 42,000” and assume every riyal becomes taxable once someone crosses it. That is not how it works.

The law follows four steps:

1. Add up gross income. This means cash and in kind benefits received during the tax year.
2. Subtract the OMR 42,000 threshold. What is left is net income.
3. Subtract applicable exemptions, costs and losses. What is left is taxable income.
4. Apply 5%.

Here is an example, for illustration only. An employee has total income of OMR 60,000. The amount above the threshold is OMR 18,000. If no exemptions or costs apply, taxable income is OMR 18,000 and the tax is OMR 900. It is not OMR 3,000, which is what 5% of the full OMR 60,000 would be. If the person has qualifying exemptions, such as health or education expenses, taxable income would be lower.

Who is a tax resident?

A tax resident is anyone present in Oman for more than 183 days in a tax year, in one stretch or added up across the year. Residents can be taxed on income from inside and outside Oman, subject to the law’s exemptions. Non residents are taxed on income earned in Oman.

For HR, this means joining dates, exit dates and travel patterns can matter. Employees who move to Oman, leave Oman or split their time between countries need extra care. Software cannot decide anyone’s tax residency. It can keep the employment dates and documents that a tax adviser will ask for.

What counts as employment income?

The law defines salary and wage income broadly. It includes bonuses, allowances, benefits in kind and other payments linked to employment.

So think beyond basic salary. A payroll record that will hold up in 2028 separates:

• Basic salary
• Allowances
• Overtime
• Bonuses and incentives
• Benefits in kind
• Other employment payments

If everything sits in one column called “salary”, it becomes hard to analyse later. Each component may not be treated the same way. The final treatment must follow the law, the regulations and official guidance. The software’s job is to keep the data organised so the right rule can be applied.

Why benefits in kind need attention

Gross income includes non cash benefits. Cash is easy to see. A company provided benefit is harder. HR may know about it, but payroll may have no field for what it is, what it is worth or how long it lasts.

Record benefits as structured data, not as notes, emails or side spreadsheets. And do not assume every benefit is taxed the same way.

What will employers have to do?

The Tax Authority’s FAQ says employers must withhold the tax and pay it to the Tax Authority. The law covers salaries and wages, pensions, end of service benefits and board or membership remuneration. The procedures and deadlines will follow the regulations.

Plan for a workflow like this:

1. Employee data
2. Payroll calculation
3. Tax withholding
4. Payslip
5. Reconciliation
6. Payment to the Tax Authority
7. Reporting and record keeping

If you already send monthly wage files, you know how much payroll data quality matters. Our guide to WPS in Oman: the SIF file, the 3 day rule and why files get rejected shows the same lesson.

Withholding is not the same as filing

Anyone whose gross income goes above OMR 42,000 must file an annual electronic return. If an employee’s only income is salary, wages or a pension from one employer, they can ask that employer to file for them. They must also give a declaration that they have no other income.

Employees with rental, investment or freelance income may have filing duties of their own. Say this clearly when you communicate with staff. Take someone on a salary who also earns rent. Payroll sees the salary. It does not see the rent. So payroll withholding does not always cover the whole tax position.

Bonuses and variable pay

The threshold is annual. That means payroll must track year to date pay, not only the monthly amount.

Take an employee who earns OMR 3,000 a month and gets a OMR 10,000 bonus in December. Their annual income is OMR 46,000. They cross the threshold only because of the bonus, by OMR 4,000 before any exemptions. You cannot see that by looking at December alone.

The same applies to commissions, overtime, arrears, salary changes and final settlements.

Joiners, leavers and end of service

Part year staff make records harder. Someone may join in June, leave Oman in October, or receive a final settlement with several parts. Because residency depends on days spent in Oman, joining and exit dates are more than admin fields.

End of service benefits are also a listed income source, and employers must withhold on the ones they pay. Keep the final settlement inside your payroll trail, not in a separate file. You want one line of history: employee record, salary history, leave and attendance, end of service calculation, final settlement.

If you need a refresher on the calculation itself, read our guide to end of service gratuity in Oman.

Exemptions: what HR should know

The law lists many exemptions and deductions. They include diplomatic salaries, salary that an Omani tax resident earns for work outside Oman, contributions to approved pension systems, qualifying health and education expenses, zakat and donations up to 5% of gross income, home loan interest on a primary residence, and income from selling a primary home.

Do not assume your payroll will calculate every personal deduction for every employee. Many depend on facts only the employee knows. A sensible system separates three things: data the employer controls, information the employee provides, and rules set by the Tax Authority. How much of this employers must apply during withholding is something to confirm in the executive regulations and official guidance.

What records should employers keep?

The law requires tax records to be kept for five years from the date the return is filed. The Tax Authority can also review returns and carry out audits, so the paper trail matters.

Keep records such as:

• Employee records and documents
• Salary and allowance history
• Overtime and bonus records
• Benefits information
• Joining and exit dates
• Final settlement records
• Payroll reports
• Adjustment history and audit logs

Spreadsheets are not automatically a problem. The real question is whether you can produce accurate figures years later and show who changed what. Keeping documents in one place also helps with things like passport and visa expiry tracking.

What should HR software be able to do before 2028?

Do not ask, “Does it have a PIT button?” Ask, “Does it hold the data and controls the tax process needs?”

A good system should:

• Keep structured employee records in one place
• Track salary components separately
• Keep year to date payroll history
• Handle bonuses, overtime and other variable pay
• Record benefits in kind properly
• Keep a clear history of joining, transfers, pay changes and exits
• Keep an audit trail of who changed what
• Produce reports without manual rebuilding
• Limit access to confidential pay data by role
• Adapt when Oman issues further rules

That last point matters most. A system that is right for today’s rules but cannot change is a risk.

HR, payroll and finance need one source of data

PIT is not one department’s job. HR holds employee data, dates, benefits and pay records. Payroll runs the monthly calculation, payslips and year to date totals. Finance handles payment, reconciliation and reporting. Management reviews pay structures, staff communication and system readiness.

Things go much smoother when all four teams work from the same records.

A practical timeline

2026: clean the data. Find out where employee and payroll data lives. Check that allowances are separated, bonuses are tracked, HR and finance records match, and documents are stored centrally. Test whether you can rebuild a payroll calculation from the underlying data.

2027: configure and test. As guidance becomes clear, set up payroll rules and test them. Cover bonuses, joiners, leavers and final settlements. Run a parallel payroll, train your team and brief employees.

January 2028: go live under the applicable rules.

2028 and 2029: reconcile and file. Keep records through the year and prepare for the first filing round, six months after year end.

What is confirmed, and what to watch

Confirmed in the law:

• PIT starts on 1 January 2028
• The rate is 5%, with an OMR 42,000 threshold
• Several income sources are covered, including employment income and benefits in kind
• Pensions and end of service benefits are covered
• Employers must withhold on salaries and similar payments
• Annual electronic returns are required where applicable, within six months of year end
• Records must be kept for five years

Still to watch: The decree told the Tax Authority to issue executive regulations within a year of publication, which points to around 30 June 2026. Check the Tax Authority website for what has been published so far. Details such as withholding procedures, payment deadlines and employer filed returns depend on those rules. The Tax Authority has also said its electronic PIT system is designed and that guidance will come out step by step.

Do not hard code assumptions from blogs, social posts or vendor claims, including this article. When the official rules change the process, your payroll has to change with them.

How HR software can help

Software cannot replace a tax adviser, and it cannot decide an employee’s final tax position. What it can do is give you a clean starting point.

NoorHR brings employee records, attendance, leave, payroll and compliance into one platform built for Oman. That includes Social Protection Fund (SPF) handling, WPS file generation, document and expiry tracking, multi company setup, audit trails and end of service calculations.

The benefit is not a single “PIT feature”. It is having employee and payroll data in one structured place, so you can adapt when the rules are final.

Final takeaway

The 5% rate is the easy part. The harder part is everything around it: clean employee data, separate pay components, bonuses, benefits, joiners and leavers, withholding, filing and records.

You do not need to guess the final rules. You need a payroll operation that is accurate, structured and ready to change. If your data still lives in disconnected spreadsheets, 2026 is a good year to fix that.

If you want to see how your current setup holds up, book a free 30 minute call with the Masirat team. We will look at your payroll and HR data and tell you honestly whether NoorHR, Our HR Software in Oman, is a fit.

Official resource: The Oman Tax Authority publishes the PIT Law, FAQs and guidance at taxoman.gov.om.