Most important aspects to apply for zorgtoeslag (= name subsidy):
1. You are older than 18
2. You have a health insurance
3. For 1 person: earn less than €25.000 per year; For 2 persons: earn less than €40.000 per year
Things you have to show:
Current health insurance
Data about your income (easiest way is the Jaaropgave Belastingdienst)
Download programme or letter from www.toeslagen.nl/download/21.html