Filing your Isle of Man personal tax return doesn’t have to be stressful. With the 6 October 2025 deadline set, now is the time to get organised. Filing early helps you avoid delays, reduce errors, and receive refunds faster.

To make the process easier, here’s a step-by-step checklist covering everything you need to prepare:

Step 1: Update Your Details

Before filing, confirm your details with the Isle of Man Income Tax Division (ITD):

• Have you changed your address?
• Has your residency status changed?
• Have you updated your marital status?

Incorrect details can cause delays, so ensure everything is accurate before you begin.

Step 2: If Using a Tax Agent

• If a tax agent is filing on your behalf, they must declare their name on your return.
• Double-check that they have the correct information to avoid mistakes.

Step 3: Gather Your Documents

Make sure you have all necessary paperwork, including:

• Employer benefits (such as company car, pension schemes)
• Bank statements (interest earned or paid)
• Investment income (dividends, trusts, bonds)
• Rental income and tax paid abroad
• Self-employment tax computation
• Loan and mortgage interest statements
• Charity donation receipts

If you are filing jointly, both spouses should review the tax pack to ensure accuracy.

Step 4: Employment & Salary Income

You must declare all employment income and benefits, including:

• Salaries, bonuses, and overseas wages
• Company pension contributions
• Income from multiple jobs (each job must be declared separately)
• Any work done abroad, including UK, Isle of Man, and overseas workdays

Step 5: Bank, Investments & Business Income

• Declare all interest earned, even from UK tax-free investments like PEPs and ISAs (which are not tax-free in the Isle of Man).
• Report business earnings, dividends, and any trust distributions or investment-related income.

Step 6: Other Income Sources

You must also declare:

• Rental income, including earnings from the TT Homestay Scheme (tax-free up to £2,350).
• Private pensions that are not government payments.
• Bursaries and scholarships.
• Any income received from abroad, along with tax paid on it.

Step 7: Tax Returns from Other Jurisdictions

If you have filed a tax return in another country, you must declare it. This includes foreign salaries, business income, and rental earnings that have already been taxed abroad.

Step 8: Claim Tax Reliefs & Allowances

Reduce your tax liability by claiming:

• Employment expenses (such as work tools, clothing, and professional fees).
• Mortgage and loan interest paid in the Isle of Man or abroad.
• Charity donations (make sure to keep receipts).
• Cohabiting Couples Allowance (extra relief for couples with children).

Step 9: Final Checks Before Submission

Before submitting your tax return, ensure that:

• All income sources are declared.
• Deductions and reliefs are properly claimed.
• The statement of full income disclosure is signed.
• Refund details are set up for automatic payment.

File Early, Stress Less

The tax return deadline is 6 October 2025, but filing early helps avoid delays, ensures smoother processing, and gets refunds to you faster.

If you need assistance with your tax return, speak to a tax expert today.