First income tax
I received by post the papers to fill my first income tax in Brussels, Belgium.
I chose the TaxOnWeb option and chose the autocomplete option.
I worked for 6 months in 2018, from July to December, as a normal employee. During this time I received around 20.000 euros (example).
My employer did all the payments to social security, taxes, etc.
During those 6 months (and even now) I didn't buy a house, opened a pension fund, or any other product that I could use to benefit for a refund of my taxes. I also don't have any product or saving at my country of origin.
When I do a simulation in TaxOnWeb, the system tells me I have about 3.000 euros of refund to receive.
Why? Is this because I just worked half a year and it is calculating as the company who employed me gave too much taxes?
Thank you in advance.