What if I forgot to pay zakat for years?

Missed zakat is still owed

Zakat becomes due once a year passes with wealth above the nisab (Sunan Ibn Majah 1792). Forgetting doesn't cancel it, much like forgetting a loan doesn't cancel the loan. What forgetting does remove is the sin of deliberately withholding it:

Note: for converts, this only applies to years after your shahada. See Do I have to pay zakat as a new Muslim?

Estimating past years

• Find your starting point: roughly when your savings first passed the nisab.
• Use records: old bank statements, investment summaries, gold receipts.
• Year by year: calculate 2.5% of your zakatable wealth for each year.
• When unsure: make a reasonable estimate, and round up rather than down.

Many scholars say you can subtract the zakat owed for earlier years before calculating later years, since that money was already owed to the poor. A knowledgeable imam or a zakat advisor at a Muslim charity can help.

Paying it off

Pay as soon as you reasonably can. If the total is large and paying it all at once would cause real hardship, many scholars allow a short, committed payment plan. Don't let the size of the number stop you from starting.

Repentance and hope

Ask Allah's forgiveness, especially if you knew and kept putting it off. Then set up a system so it doesn't happen again: a fixed zakat date, a calendar reminder and a simple spreadsheet. See When do I have to pay zakat?