Pyranthou 24 (1st Floor), Heraklion, Crete 71305

Our Team

Konstantinos Choumas

Founder & CEO

Phone

2810 318 593

Mobile

6974 307 371

Fax

2810 258 678

kx@tax-atas.gr,kxou58@otenet.gr

Short CV

Biography

Born in Heraklion, Crete in 1958, married to Maria Petsetaki with 2 children, permanently residing in Heraklion, Crete. Since 1988 I have founded and directed the ATAS accounting and tax advisory office in Heraklion, licensed by the Economic Chamber of Greece. The office today is staffed with 8 specialized professionals and external consultants. There is continuous daily updating from accounting subscription websites and magazines, as well as ongoing seminar attendance, so that we are always informed of any changes in tax and labor legislation and can fully meet our clients' requirements. We responsibly undertake support with full modern computerization aligned with current legislation.

Career

Career Path

1982 – 1988

First Steps in Accounting

Salaried accountant at major tourism businesses and medical diagnostic centres in Heraklion, Crete.

1988

Founding of the ATAS Office

The accounting and tax advisory office is established in Heraklion, licensed by the Economic Chamber of Greece.

2021

Baker Tilly South East Europe

ATAS becomes a Collaboration Member of the international Baker Tilly network, a global network of high-quality independent accounting firms.

Today

300+ Businesses & 8-Person Team

The office supports over 300 businesses across Crete, with full modern computerization and a specialized 8-person team.

Studies & Certifications

Education

Professional licence from the Economic Chamber of Greece

Member of the Economic Chamber of Greece

Continuous professional training and seminar attendance

Areas of Expertise

Expertise

Business Start-up & Cessation

Choice of legal form, registration via GEMI, AADE and EFKA enrollment, cessation & liquidation procedures.

Personnel Organisation & Staffing

Org chart design, employment contracts, ERGANI notifications and staffing strategy.

IT & System Setup

ERP/software selection, MyDATA integration, electronic invoicing & digital transformation.

Bookkeeping

Single & double-entry books per G.A.A.P., full electronic bookkeeping and reporting.

Balance Sheet Preparation

Balance sheet, income statement, cash flows and notes per G.A.A.P.

Business Transformation

Mergers, demergers, legal-form conversions with tax neutrality.

GEMI Publications & Announcements

Publication of financial statements & announcements in GEMI, deadlines and fees.

VAT & MyDATA

Electronic transmission of invoices, e-invoicing and VAT declarations.

Tax Return Preparation

All forms: E1, E2, E3, E9, Form N — with tax planning and optimization.

Payroll Management

Full payroll management, EFKA, ERGANI, periodic declarations and labor obligations.

Transfer of Company Shares

Valuation, transfer agreement, 15% capital gains tax and GEMI registrations.

Budgets, Management Accounts & Cash Flow

Annual budgets, monthly actual reporting and cash flow forecasting.

Construction Project Monitoring

Construction project accounting, property VAT, MyDATA and development law.

Investment & Grant Programme Monitoring

Development Law, ESPA, Recovery Fund — grant applications and implementation.

Public & Partner Contracts

Public tenders, guarantees, withholding taxes, project and cooperation agreements.

Client Portfolio

Our Clients

300+

Business clients

We support over 300 businesses across various sectors of activity

4 sectors · 21 activity areas · Since 1988

Commerce

Commercial Businesses

Olive oilIndustrial materials & metalsOffice equipmentHousehold goodsGraphic arts & printing

Industrial

PlasticsOlive oil processingWater bottlingWood processingPackaging productionPhotovoltaic parks

Construction

Building constructionPlumbing installationsElectromechanicalAutomation & alarm systems

Services

Diagnostic CentresHotelsTravel AgenciesPhysiciansLawyersEngineers & Consultants

Office Details

Professional Details

XOUMAS ACCOUNTING O.E.

Bookkeeping – Payroll – Computerization – Business Organization

Tax ID

043072580

Tax Office

Heraklion Tax Office

Address

Pyranthou 24 (1st Floor), 71305, Heraklion, Crete

Back to Team

Contact

Want to talk to Choumas?

Book a personal appointment or contact us directly — we are here to help you with your accounting and tax needs.

Book an appointment kx@tax-atas.gr