Qualified AAT professional
Monika Mikulska MAAT holds full membership of the Association of Accounting Technicians, giving clients a clear professional standard behind the advice and accounting work they receive.
Trust & Standards
Accreditations & Professional Standards
AAT-regulated accountancy support for UK businesses that want qualified, accountable finance help.
Your accounts are handled by Monika Mikulska MAAT, an AAT full member and licensed accountant regulated by the Association of Accounting Technicians for public-practice work.
Licensed to support clients
The AAT licence covers public-practice accountancy services, so clients can appoint Ostoya with confidence that regulated professional permissions are in place.
Practical business coverage
The licensed scope includes everyday finance work that businesses rely on, including bookkeeping, VAT, payroll, accounts preparation, management accounting, forecasting, and selected tax categories.
Current licence period
The current AAT public-practice licence period runs from 01 December 2025 to 30 November 2026.
Professional Credentials
A concise summary of the credentials and licence details clients most often want to confirm before appointing an accountant.
AAT membership
Full membership of the Association of Accounting Technicians, awarded to Monika Mikulska MAAT.
- Member
- Monika Mikulska MAAT
- Membership number
- 20332264
- Awarded
- 23 October 2025
- Certificate number
- 1059102
AAT public-practice licence
Licensed accountant status for client-facing accountancy services regulated by the Association of Accounting Technicians.
- Licence holder
- Monika Mikulska MAAT
- Licence number
- 1006375
- Membership number
- 20332264
- Licence period
- 01 December 2025 to 30 November 2026
Certificates
Review the professional certificates that support our AAT membership and public-practice licence details.
AAT full membership certificate
Full membership awarded to Monika Mikulska MAAT on 23 October 2025.
AAT licence certificate
AAT public-practice licence for the period 01 December 2025 to 30 November 2026.
Want to work with a regulated accountant?
Tell us what you need help with and we will explain the right service scope, onboarding steps, and what information we need from you.