Source-cited draft: corporate income tax for Isle of Man (tax year 2025) — rates, thresholds and rules with primary-source citations. Unverified; pending local-accountant review.
Source-cited draft.Written from sources but not reviewed by a licensed practitioner, so it may be incomplete or wrong. General reference only; don't file or take a position on it without professional review.
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Every figure is drawn from this Tax Guide and cited to its source.
Standard corporate income tax rate
0%Income Tax Act 1970 — https://taxsummaries.pwc.com/isle-of-man/corporate/taxes-on-corporate-income
10% rate (banking and large retail)
10% on banking deposit-taking income and on retail profits exceeding IMP 500,000 in the yearIncome Tax Act 1970 — https://taxsummaries.pwc.com/isle-of-man/corporate/taxes-on-corporate-income
20% rate (Isle of Man land/property and extraction)
20% on income from Isle of Man land and property, and (from 2024) petroleum extraction activities/rightsIncome Tax Act 1970 — https://taxsummaries.pwc.com/isle-of-man/corporate/taxes-on-corporate-income
Pillar Two domestic top-up rate
15% effective minimum rate for in-scope large multinational groups (OECD Pillar Two)Global Minimum Tax (Pillar Two) Act 2024 — https://taxsummaries.pwc.com/isle-of-man/corporate/taxes-on-corporate-income
Voluntary election to 10%
Certain 0%-rate companies may elect to be taxed at 10%Income Tax Act 1970 — https://taxsummaries.pwc.com/isle-of-man/corporate/taxes-on-corporate-income
Tax base
Worldwide profits of resident companies; Isle of Man-source profits of non-resident companiesIncome Tax Act 1970 — https://taxsummaries.pwc.com/isle-of-man/corporate/income-determination
Withholding tax on dividends
0% (no withholding tax on dividends)Income Tax Act 1970 — https://taxsummaries.pwc.com/isle-of-man/corporate/withholding-taxes
Withholding tax on interest
0% (no withholding tax on interest)Income Tax Act 1970 — https://taxsummaries.pwc.com/isle-of-man/corporate/withholding-taxes
Withholding tax on royalties
0% (no withholding tax on royalties)Income Tax Act 1970 — https://taxsummaries.pwc.com/isle-of-man/corporate/withholding-taxes
Distribution/loan charge
Historic 'distributable profits charge' / attribution regimes abolished; relevant Manx-resident shareholders taxed on distributionsIncome Tax Act 1970 — https://taxsummaries.pwc.com/isle-of-man/corporate/income-determination
Corporate tax return deadline
Within 1 year and 1 day of the end of the accounting periodIncome Tax Act 1970 — https://taxsummaries.pwc.com/isle-of-man/corporate/tax-administration
Corporate tax payment deadline
Tax due within 1 year and 1 day of the accounting period end (alongside the return)Income Tax Act 1970 — https://taxsummaries.pwc.com/isle-of-man/corporate/tax-administration
Rendered from the canonical facts model. General reference only — confirm with a qualified professional before acting.
The Isle of Man taxes most company profits at 0%, with higher rates reserved for banking/large-retail, Isle of Man land income, and (from 2024) certain extraction activities. A 15% Pillar Two top-up applies to in-scope multinational groups. There are no withholding taxes on dividends, interest or royalties.
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Other IM computations in the OpenAccountants Tax Library.