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Good morning, Vinicius,
First of all, excellent material available on the site, congratulations!
I've been living in Ireland since May 2018, when I came to study, and in 2019 I received a job offer that made me change my plans, I wasn't fully aware that I would need to leave Brazil permanently after 12 months.
In other words, I didn't leave the country permanently, and my last tax return was in 2018, for 2017. (This last declaration was made considering that I was employed in Brazil, I left the company in 2017, this was my last record in my wallet)
I have a house that is rented out, but as I still pay mortgage and tax, I hardly make any profit each month.
I send money to my mother every month, she has a credit card linked to my current account, I make monthly payments as well, in other words I use my current account.
What is my tax situation and how can I regularize it?