Current Corporate Tax Rates in Australia: What Businesses Need to Know

Lower Company Tax Rate for Base Rate Entities

Businesses classified as base rate entities benefit from the lower company tax rate. In recent years, the lower rate has been set at 25%. This can make a real difference to company profit, freeing up revenue for growth and investment.

To qualify, companies must have an aggregated turnover below $50 million during the income year. The aggregated turnover threshold includes the GST turnover and income from connected businesses and affiliates, not just your own revenue. If you exceed this threshold, the standard rate applies.

Assessable Income and Passive Income Rules

Eligibility for the lower rate also depends on your assessable income. If more than 80% of your company’s total assessable income comes from passive income (such as interest income, dividends, rental income, corporate distributions, and net capital gains), you won’t qualify for the lower rate. Instead, company tax rates apply at the standard level.

Passive income includes gains from investments, interest, rent, and distributions from listed investment companies. Trading income from actual business activities is not considered passive. Reviewing your mix of trading income, passive income, and other revenue sources will clarify which rate you qualify for.

Companies with significant capital gains, rental income, or distributions should pay careful attention to these limits each year. The rules are applied for every previous income year as part of the eligibility test, making ongoing review important.

Company Tax Rate Eligibility Requirements

Understanding eligibility requirements is an ongoing process for businesses aiming to pay tax at the most efficient rate. Planning and record-keeping are crucial, as small errors can mean paying more tax than necessary.

The government uses aggregated turnover and assessable income tests to distinguish between active business activities and passive investment. Aggregated turnover for the current income year includes not just your company’s trading income, but also that of controlled companies and affiliates.

For a company to claim the lower rate, it must meet both the aggregated turnover threshold and the passive income test. These limits keep the lower rate targeted toward genuinely active Australian businesses.

Aggregated Turnover and the $50 Million Threshold

The $50 million aggregated turnover threshold is a critical part of company tax laws. To determine turnover, add together your company’s revenue, GST turnover from sales, and income from affiliated entities. Some items, like capital gains or sales between controlled companies, are excluded.

Small business entities must track their aggregated turnover before the end of each income year. These calculations can be complex for groups of companies or those with changing revenue patterns.

Assessable Income and Income Inclusion Rule

Assessable income includes all business and investment income earned during the year. The income inclusion rule affects companies with international business activities, tying foreign profits back to Australian tax laws when undertaxed profits rule applies. Businesses need to include trading income, rental income, and capital gains in their calculations, but review exclusions and limits carefully to comply with current tax laws.

If passive income from interest, dividends, rental, and net capital gains exceeds 80% of your total assessable income, the standard rate applies. This rule is important for property investment firms, holding companies, and listed investment companies.

Taxable Income, Payments, and Lodgement Deadlines

Understanding tax rates alone is not enough; businesses must also manage tax return deadlines, payments, and regular reporting to avoid penalties.

Australian companies pay tax through regular instalments using the Pay As You Go (PAYG) system. These payments are calculated based on expected taxable income, revenue, or profit for the current year. Larger companies pay monthly, while many small business entities pay quarterly.

Company Tax Returns and Payment Schedules

Lodging your company tax return is a key compliance obligation. For the 2025 income year, most companies need to lodge returns by May or January in the following year, depending on their circumstances. Final payments are usually due in December. Missing these deadlines may result in penalties or interest charges.

Companies must include all assessable income, taxable income from business activities, passive income, net capital gains, and any PAYG instalments already paid. This ensures the correct company tax rate applies and credits or refunds are processed.

Franking Credits and Corporate Tax Rate Implications

Franking credits are an important feature of Australian tax laws, especially for businesses paying dividends. The rate at which franking credits are applied depends on your company tax rate in the previous income year.

If you paid the lower company tax rate last year, current dividends will be franked at the same rate. If your business moves between rates, this can affect the benefit shareholders receive and impact timing of dividend payments. Planning dividend distributions and understanding franking credit limits helps avoid unexpected outcomes for shareholders.

Companies paying the standard rate frank dividends at 30%. Those on the lower rate frank at 25%. The company tax rates apply based on previous income year status, so review your eligibility carefully before planning dividends.

Recent Developments in Corporate Tax

Recent years have seen some changes to company tax rates, payments, and eligibility rules. While the dual rate system remains, government updates keep the rules current and targeted for Australian businesses.

International tax changes now include the undertaxed profits rule and income inclusion rule for large multinational groups. For smaller businesses and base rate entities, existing limits and tests remain stable for 2025.

The instant asset write-off remains available for some small business entities, while changes to franking credits and capital gains affect certain groups. Australian tax laws adapt regularly to new business needs, so reviewing compliance and claim opportunities can help companies stay ahead.

Planning for the Right Corporate Tax Rate

Choosing the best strategy for your company tax return starts with understanding all the current rules, rates, and limits. Businesses close to the aggregated turnover threshold or income mix limits should plan ahead to avoid surprises at tax time.

Managing trading income, passive income, and business activities can affect your eligibility for the lower rate. Regular reviews of taxable income, payments, and turnover help keep your company compliant while securing savings on tax.

Professional advice and timely planning are especially valuable for companies approaching $50 million turnover, dealing with large capital gains, or managing varied income streams. The government’s rules are designed to keep the company tax system fair and supportive for Australian businesses, but they require confidence and care to understand effectively.

Conclusion

The rules for company tax rates in Australia focus on supporting active businesses with a lower rate, while large companies and those with passive income pay the full company tax rate. By understanding your company’s total assessable income, aggregated turnover, eligibility rules, and payment deadlines, you give your business every chance to thrive and grow.

Stay on top of your business activities, claim all entitled credits, and review your income regularly to meet tax laws and maximise profitability. Need help? Seek advice early, so your next company tax return is accurate, timely, and supports your business future.