A friend and I were discussing the "sufficient income" requirement for a D7 visa, he showed me a number of websites offering visa advice which refer to this being €635 a month or €7260 a year. Unfortunately the information on those websites is neither up to date or accurate.
The minimum wage is updated annually and became €665 a month as from January 2021. What these sites also missed is that the monthly minimum wage is based on the worker receiving 14 payments a year not 12. (Portuguese workers get two bonuses each year equivalent to a month's salary (one bonus for their summer holiday and the other for Christmas).
So for 2021 the "sufficient income" requirement is not €635 x 12 = €7260, it's actually €665 x 14 = €9310.
This may affect those of you who are transferring funds to Portugal to meet the "sufficient income" requirement and have only transferred €7260.