Is zakat obligatory on an amount of money held in the home country, which is less than the debt amount, knowing that the questioner is preparing for marriage?

You must count your money and your business offerings, including the amount allocated for marriage, and subtract any debt. If the remainder reaches the nisab and a hawl has passed on it, then pay zakat from it, which is two and a half percent. Note that the nisab for monetary wealth is the equivalent value of 85 grams of gold.