E1 (income tax return)
The main form for declaring an individual's income. It determines the tax you owe or the refund you receive.
The Ε1 declares all income for the previous year, including salaries, pensions, rents and self-employment income.
The tax assessment that follows calculates the final amount. If you find an error, you can file an amended return.
Official source: AADE (Greek tax authority)