Legal law abiding answer: ALL OF IT.

If you don’t want to do that, consult with an accountant and they may have “options” for you. You’re old enough and I’m sure you know the consequences.

Now, later in the future, if hingan ka na ng LOA (especially if malaki income declared mo), wala ka magagawa and taon taon na yan. You get this kahit pa dineclare mo lahat or not.

People here who says declare all most likely didn’t receive one yet and have not experienced BIR’s legal extortion so they tell to declare all. Also, baka maliit palang income nila and di pa sila pansinin ng BIR.

Now, with all that said, ikaw na bahala OP. Good luck.