Business Portal Login: ROS, myAccount, AIB & Enterprise Ireland

Anyone who has run a business in Ireland knows the feeling: you need to file a return, check a payment, or apply for a grant, and you’re staring at a login page that asks for something you don’t have handy. The good news is that each of Ireland’s main business portals has a straightforward sign-in process once you know what to expect, and this guide walks you through logging into five key portals — from Revenue’s ROS to the Enterprise Ireland client hub — with step-by-step instructions and tips for managing certificates and passkeys.

Major Irish business portals covered: 5 ·
Primary government portal: ROS (Revenue Online Service) ·
Digital certificate required: Yes for ROS ·
Bank portals with passkey support: AIB Business (iBB) ·
Enterprise Ireland portal purpose: Client account management

Five portals, one pattern: each uses its own domain and sign-in method, but the underlying credentials and recovery paths share many similarities.

How do I log in to the ROS business portal?

ROS (Revenue Online Service) is the Irish tax authority’s secure platform for business customers. Every login requires a digital certificate loaded into your browser. Here’s how to proceed.

What digital certificate is required?

• A digital certificate is a file that confirms your identity to ROS. You can request it directly through the ROS website after registration.
• Revenue states that once a business is registered, the PPSN is used for all correspondence (Revenue, Irish tax authority).

How to load a digital certificate?

1. Visit ros.ie and click “Secure Sign In for Business Customers”.
2. Follow the prompts to import your certificate file (usually a .pfx or .p12 file).
3. Enter your certificate password when prompted.

Managing my ROS certificates

• Use the “Manage My Certificates” link on the ROS homepage to renew or revoke certificates.
• Keep your certificate file and password secure; losing access means re-registering.

The implication: having a current digital certificate is non-negotiable for any business filing taxes through ROS.

How do I access myAccount and Revenue online services?

myAccount is Revenue’s personal tax portal, but many business owners use it for PAYE services and correspondence. Access is separate from ROS.

Sign in to myAccount

1. Go to Revenue online services and select myAccount.
2. Enter your email address and password. If you haven’t registered, click “Register” and follow the identity verification steps.

Using MyEnquiries

• MyEnquiries is Revenue’s online query system, accessible through myAccount.
• You can send secure messages about your tax affairs and receive replies within 10 working days.

Revenue phone number for help

• Revenue’s contact centre can assist with login issues. The number is available on the Revenue website under “Contact Us”.
• Typical support hours are 9:00–17:30, Monday to Friday.

What this means: using the correct portal is key to timely tax management.

How do I log in to Bank of Ireland Business Online?

Bank of Ireland’s Business On Line portal gives business customers advanced control over payments and account management. Access requires a username and a one-time password from the Approve app or a card reader.

Business On Line access

1. Visit businessonline-boi.com to reach the logon page (Bank of Ireland Business Training, official training portal).
2. Enter your user name and password, then click the LOGON button (Bank of Ireland Business Training).
3. If prompted, approve the login via the Approve app, which generates a one-time password (Bank of Ireland UK Customer Handbook, official document).

Flexibility and control over payments

• Once logged in, you can make payments, set approval limits, and view transaction history.
• Multiple users can be set up with different permission levels.

How do I log in to AIB Business (iBB)?

AIB’s business internet banking, known as iBB, now supports passkeys for faster, more secure access. The login process is simpler than traditional two-factor methods.

Using passkeys for login

1. If you have a device that supports passkeys (e.g., a smartphone with biometric authentication), you can set one up during your first login.
2. Thereafter, you log in by scanning your face or fingerprint instead of entering a password.
3. The AIB Business login page is at aib.ie/business/business-login.

Seamless and secure banking

• AIB states: “We’re making business banking seamless and secure” (AIB Business, official banking site).
• Passkey login reduces the risk of phishing because the authentication is tied to your device.

The catch: passkey availability depends on account eligibility, but the fallback method works reliably.

How do I access the Enterprise Ireland Client Portal?

The Enterprise Ireland Client Portal is for businesses that work with the state development agency. Login requires an email address and password, with a “Keep me signed in” option for convenience.

Email and password sign-in

1. Visit the portal at Enterprise Ireland client portal.
2. Enter your registered email and password. If you haven’t registered, you must confirm your email via a verification code and complete your profile, including a mobile phone number (Enterprise Ireland FAQ, official support).
3. Tick “Keep me signed in” to avoid repeated logins during your session.

Recent changes to the portal

• Enterprise Ireland has updated its portal interface in the past year. Users may notice a new look and slightly different navigation.
• The support team is available during business hours 9:00–17:30 (Enterprise Ireland, state agency support).

What we know and what remains unclear

The pattern: all portals require strong authentication, but methods vary.

What portal users say

“Secure Sign In for Business Customers”

— ROS official site

“Access our online banking service for business customers who need more flexibility and control.”

— Bank of Ireland Business Banking page

“We’re making business banking seamless and secure.”

— AIB Business login page

“Welcome to the Enterprise Ireland Client Portal.”

— Enterprise Ireland portal

For Irish businesses, the choice between portals isn’t a matter of preference — it’s a matter of function. Each portal serves a distinct purpose: tax compliance, personal tax queries, daily banking, or enterprise supports. The implication is clear: you’ll likely need more than one, and managing certificates and passkeys across multiple platforms is the real admin hurdle. For a sole trader, the priority should be getting ROS and myAccount set up correctly. For a growing company, adding Bank of Ireland Business Online or AIB iBB can streamline cash management. The trade-off is that each additional login means another credential to secure — and another recovery process to learn if you get locked out.