Is zakat obligatory on inherited money that has not had zakat paid on it for five years, knowing that the heir was 15 years old at the time of his father's death and is now 20 years old, and is about to get married and furnish a home?

If you inherited money that reaches the nisab (minimum threshold) by itself, or by adding it to your existing wealth, and five years have passed while it remained at or above this threshold, then you must pay its zakat for those years at a rate of 2.5% for each year, based on the value of the money at the end of each year. However, if the money did not reach the nisab throughout all or some of these years, then you are only obligated to pay zakat for the years in which it did reach the nisab. The nisab for money is estimated based on what is more beneficial for the poor between the value of the nisab for gold (85 grams) or the nisab for silver (595 grams).