How to Declare Side Hustle Income to Revenue.ie

Do You Need to Declare Side Hustle Income?

In Ireland, all income — regardless of source — is taxable unless explicitly exempt. Whether you're dog walking, freelancing, selling on Etsy, or renting a room, Revenue expects you to declare it. The question is not whether to declare, but how.

The €5,000 Simple Case Rule

If your non-PAYE income is under €5,000 net (after expenses) and you're already paying tax through PAYE employment, you qualify for Revenue's "simple case" process. Instead of filing a full self-assessment Form 11, you contact Revenue through MyAccount at revenue.ie and they adjust your tax credits to collect the additional tax through your payroll. No accountant required for this route.

Once your side hustle profit exceeds €5,000 in a year, you must register for self-assessment and file a Form 11 return annually.

How to Register for Self-Assessment

Registration is straightforward through MyAccount on revenue.ie:

• Log in with your PPS number and MyGovID
• Select "Manage My Record" then "Register for a Tax"
• Choose "Income Tax" and indicate you have non-PAYE income
• Revenue will issue confirmation and you'll be registered for self-assessment

Register as soon as you start earning side income — don't wait until you're near the threshold.

Key Filing Deadlines

The Irish self-assessment calendar runs as follows:

• 31 October: Deadline to file your Form 11 return and pay tax for the previous year
• Mid-November (ROS extended deadline): If you file and pay online via Revenue Online Service, you get a few extra weeks
• Preliminary Tax: Also due 31 October — you pay 90% of your current year's estimated liability (or 100% of last year's final bill) in advance

What Counts as Income vs Profit?

Revenue taxes profit, not gross revenue. Deduct your legitimate business expenses from your total income first. Common allowable deductions include materials, equipment, software subscriptions, platform fees, professional services, and a reasonable proportion of phone and home costs if you work from home.

What Happens If You Don't Declare?

Revenue receives data from banks, payment platforms (Etsy, PayPal, Airbnb, Stripe), and the Social Welfare system. Undeclared income discovered during a Revenue audit attracts surcharges of 10–30% on top of the tax owed, plus interest at 0.0219% per day. Voluntary disclosure before an audit significantly reduces penalties.

This guide is for general information only. Always verify current rules at revenue.ie or consult a qualified tax professional.