Hello, I’m sure everybody has this in hand, but just a heads up in case. Next year tax for 2019 will be collected in 2019 and the payments will be monthly or quarterly. The good news is that tax for 2018 is going to be waived because otherwise one would be paying 2018 AND 2019 next year. A western Government actually waiving tax is probably a first 
The monthly amount is based, I assume, on 2017 actuals we submitted back in May. The tax credit for 2018 will be based on the declaration we will make next May. I’m unclear on how the balancing between the payments based on 2017 and the 2019 actuals will be done, but presumable that’s after out 2019 income declaration in 2020.
I found the amount that would be deducted from my bank account each month on the Impôt’s webside by following the Prélèvement à la source link on the welcome page…
