Once the monthly bills are paid, many employees start asking where to put what is left. The answer depends on your goals and your appetite for risk, but one factor is often overlooked: tax. Two investments with the same headline return can leave you with very different amounts after tax. This guide covers the basics so you can compare options fairly. It is general information, not personal advice.

Start with the foundation

Before investing, build an emergency fund of a few months of expenses in an easily accessible account, and clear expensive debt. A guaranteed saving of 20 percent by repaying a high-interest loan beats most investments. A clear monthly plan helps; see how to budget on a Kenyan salary after deductions, and track your goals with the savings and sinking fund tracker.

Interest on savings

Interest from bank accounts and similar products is usually taxed at source through withholding tax, so you receive the net amount. For most individuals this is the final tax on that interest. Check the rate and any exceptions for particular instruments with your bank, and use the dividend and interest tax calculator to estimate the amount you will keep.

Dividends

If you own shares or have a stake in a company, dividends are paid after a withholding tax is deducted. That tax is typically final for residents, so you do not include the dividend again in your return. Company owners who pay themselves in dividends should read dividends and paying yourself from a company and keep a record with the dividend and withholding tax tracker.

Pensions and retirement savings

Contributions to a registered pension scheme can reduce your taxable pay within a yearly limit, which makes retirement saving one of the more tax-friendly choices. The catch is that money is locked in until retirement, and withdrawals have their own tax rules. Read pension contributions and tax relief for employees and pension withdrawal tax: what changed. The pension lump sum tax calculator estimates the tax on a withdrawal.

Property

Buying land or a house can build wealth, but it brings its own taxes and costs. Rental income is taxable, either through monthly rental income tax or an annual return; see MRI or annual rental tax. When you sell, capital gains tax applies, and you can estimate it with the capital gains tax calculator. Before buying, read costs of buying property: a checklist so stamp duty, legal fees and other charges do not surprise you, and compare yield with rental yield explained.

A side business

Starting a small business with your savings is another form of investment. Income from it is taxable even if you also have a job. Side hustle income for employees explains how to declare it, and starting a business: registration and tax steps lists what to set up.

Compare after tax and after costs

When you compare options, work out the net return: gross return, less tax, less fees, over the same period. A product that pays 12 percent with a 15 percent tax on the income returns 10.2 percent, which may be less than a 10.5 percent product taxed at a lower rate. Write each option in a table with its return, tax treatment, fees, access to your money and risk, and compare them side by side.

Watch inflation and risk

Returns that do not beat inflation reduce your buying power. Higher returns usually carry higher risk, including the risk of losing money. Never put in money you may need within a year, and avoid schemes that promise guaranteed high returns, which are common in fraud.

Keep records

Keep statements, contract notes and certificates for every investment. They support your tax return and tell you what you earned. How to organise your tax documents through the year shows a simple system.

A sensible order

Build an emergency fund, clear costly debt, use tax-efficient retirement saving, then add investments that match your goals and risk. Check the tax treatment of each product before you buy, and ask a licensed adviser if the amount is large or the product is unfamiliar.

A worked comparison

Say you can put KES 100,000 into either a savings product paying 10 percent a year with 15 percent withholding on the interest, or a fixed deposit paying 9.5 percent taxed the same way. The first earns KES 10,000 before tax and KES 8,500 after it; the second KES 9,500 and KES 8,075. The difference is small, so access to your money and the safety of the provider may matter more than the headline rate. Always check the current tax rate on the product before you decide.