Interest income must be separated from your wealth and disposed of — not kept, not spent on yourself, and not given as if it were a reward-earning charitable donation.
Confidence level: Strong and well-established across all major schools of thought and contemporary fatwa bodies. Some detail (recipients, use for family, disposal via debt repayment) varies by school — see Madhab Views below.
WHY THIS MONEY IS TREATED DIFFERENTLY FROM ORDINARY CHARITY
Riba is prohibited at its source, so interest income was never legitimately yours to begin with — even though it may have landed in your account automatically through a savings account, fixed deposit, EPF/PF balance, or a mandatory scheme. Because you didn't necessarily seek it out, most scholars don't treat receiving it as a sin in the same way that deliberately taking out an interest-based loan would be. But once it's in your possession, keeping it, spending it on yourself, or treating it as your earned wealth is not permitted.
At the same time, giving this money away is not the same act as giving zakat or sadaqah from your own halal earnings. You should not expect religious reward for disposing of it, because it was never really your wealth to be generous with — you are simply removing something impermissible from your possession. This is why scholars describe the act as "disposal" (tankhalus/tatakhallus) rather than "charity" (sadaqah) in the reward sense, even though the money often ends up in similar places — the poor, the needy, or public welfare projects.
STEP-BY-STEP: WHAT TO ACTUALLY DO
1. Identify the interest portion specifically. Don't dispose of your entire balance — only the interest/riba component. For a savings account, this is the interest credited by the bank. For EPF/PF or gratuity, request a statement breaking down your own contributions (halal) from the interest accrued on the fund (not halal). For a fixed deposit, it's the return above your original principal.
2. Calculate as precisely as you reasonably can. If you have years of statements, go through them. If exact figures aren't available (e.g., old accounts, lost records), make a reasonable, honest estimate rather than guessing low to minimize the amount or ignoring it entirely.
3. Give the full interest amount away — do not keep any portion, round down aggressively, or treat part of it as "deserved" because you didn't ask for it.
4. Choose an appropriate recipient or use (see below) — generally the poor and needy, or public welfare causes that are not acts of worship in themselves.
5. Do not make du'a expecting reward for this specific act the way you would for sadaqah — the intention is disposal, not merit-seeking generosity, even though the outward act looks similar.
6. Going forward, redirect your money to non-interest-bearing accounts or Islamic banking alternatives where available, so this becomes a one-time cleanup rather than an ongoing habit.
WHERE THIS MONEY SHOULD (AND SHOULDN'T) GO
Generally appropriate: the poor and needy directly; general charitable relief organizations; public welfare uses like funding a well, a road, a public toilet block, or similar community infrastructure that isn't itself an act of worship.
Generally discouraged by the majority: funding mosque construction, Qur'an distribution, Hajj/Umrah sponsorship, or other acts of worship — because these are acts you would normally want to earn reward for, and this money isn't meant to earn you reward. A minority of scholars are more lenient here, particularly for maintenance-type mosque expenses (electricity, water) rather than construction itself — check the Madhab Views below.
Generally not permitted: using it to pay zakat (zakat must come from your own halal wealth), keeping it as "just this once," or gifting it to wealthy relatives or friends as a favor.
Debated: using it to pay off your own interest-based debt. Several contemporary scholars, including some Hanafi-aligned bodies, permit this because it reduces harm and effectively removes riba from your situation rather than sending it elsewhere while you remain in a riba contract. Others hold that disposal must go outward to the needy, not back to offsetting your own liabilities. This is a genuine point of difference — if this situation applies to you, it's worth checking with a scholar directly.
IF YOU'VE ALREADY SPENT IT
Don't panic or become paralyzed by guilt over past unknowing spending. The priority now is: stop the ongoing accrual where you can (move to non-interest accounts), track any interest you receive from this point forward, and dispose of it properly going forward. For amounts already spent without this awareness, many scholars advise sincere repentance and moving forward responsibly rather than trying to retroactively reconstruct and repay years of small, unknowing interest receipts — though if you can reasonably estimate and afford to make up a portion, doing so is praiseworthy, not obligatory in the same way going-forward disposal is.
WHAT COULD CHANGE THIS ANSWER
— The amount in question was never actually interest (e.g., it was a fee reversal, cashback, or genuine profit-share from a Shariah-compliant instrument) — You have a specific debt situation where a scholar advises using disposal funds toward that debt rather than external charity — Local scholars in your community have a specific standing ruling on mosque-maintenance-related disposal that differs from the general guidance above — The amount is genuinely unknown despite good-faith effort to estimate, in which case a scholar can guide you on a reasonable approximation method
This is general educational guidance on a well-established principle. It is not a personal fatwa. For specific amounts, debt situations, or unusual sources of interest income, consult a qualified scholar directly.