Ribbit: The Prohibition of Interest in Jewish Law

The Price of Money

In modern economies, interest is the engine that drives lending, investment, and growth. Banks charge interest on loans; savings accounts earn interest on deposits; mortgages, credit cards, and bonds all revolve around the concept of paying for the use of money over time.

Jewish law takes a dramatically different view. The Torah explicitly prohibits charging interest (ribbit) on loans between Jews. This prohibition is stated three times in the Torah, applies to both lender and borrower, and is considered one of the most stringent financial laws in halakha.

Yet Jewish communities have thrived economically for millennia. How? Through a remarkable legal mechanism called the heter iska — and through a nuanced understanding of what the prohibition does and does not cover.

The Biblical Sources

The prohibition appears in three separate passages:

Exodus 22:24: “If you lend money to any of My people, to the poor among you, do not act toward them as a creditor; charge them no interest.”

Leviticus 25:35-37: “If your brother becomes impoverished and his hand falters beside you… do not take from him interest or increase… Do not lend him your money at interest, or give him your food at increase.”

Deuteronomy 23:20-21: “You shall not charge interest to your brother — interest on money, interest on food, interest on anything that is lent at interest. To a foreigner you may charge interest, but to your brother you shall not charge interest.”

The repetition underscores the prohibition’s importance. The Talmud derives from these passages that both the lender and the borrower violate the prohibition — the lender by charging, the borrower by agreeing to pay.

What Constitutes Ribbit?

Direct Interest (Ribbit Ketzutzah)

The most straightforward form: lending $100 with the expectation of receiving $110 in return. Any predetermined increase in the amount repaid — whether in money, goods, or services — constitutes ribbit.

Indirect Benefit (Ribbit Devarim)

The prohibition extends beyond money. If a borrower provides the lender with any benefit they would not have provided absent the loan, it may constitute ribbit. Examples from the Talmud include:

• A borrower greeting the lender with unusual warmth (if they did not do so before the loan)
• A borrower providing information or services to the lender that they would not otherwise have provided
• A borrower offering the lender a gift during the loan period

Pre-Loan and Post-Loan Ribbit

Some authorities extend the prohibition to benefits given before a loan (to induce lending) or after repayment (as a thank-you). These are classified as ribbit mukdemet (advance interest) and ribbit me’ucheret (delayed interest).

The Heter Iska: The Halakhic Solution

How It Works

The heter iska (literally, “permission for business”) transforms a loan into a business partnership. Instead of lending money at interest, the two parties enter into a joint venture:

• The investor provides capital
• The recipient uses the capital in business
• Profits (and losses) are shared according to agreed-upon terms
• A predetermined “expected profit” serves as the functional equivalent of interest

Because the payment is structured as a share of profits rather than interest on a loan, it does not violate the ribbit prohibition. The heter iska has been used for centuries and is the standard mechanism enabling Jewish participation in modern finance.

The Standard Document

A heter iska is a written agreement that typically includes:

• A statement that the funds are provided as a business investment, not a loan
• Terms for profit-sharing
• A provision that the recipient will manage the investment diligently
• A clause specifying how profits and losses will be calculated
• Often, a provision that the recipient can “buy out” the investor’s share at a fixed price — effectively creating a fixed return

Many banks, mortgage companies, and financial institutions in Israel and in Jewish communities worldwide use a standard heter iska document for transactions between Jewish parties.

Practical Modern Applications

Loans Between Friends and Family

The most common application of ribbit law is personal loans between Jews. If you lend money to a Jewish friend or family member, you may not charge or accept interest. The loan must be repaid at exactly the amount borrowed.

This can create awkwardness. If your friend insists on paying extra as a thank-you, you must decline (or both parties must agree in advance to a heter iska arrangement).

Mortgages and Bank Loans

When both the bank and the borrower are Jewish (common in Israel), a heter iska is required. Israeli banks routinely include heter iska provisions in their loan documents. In the diaspora, this issue is less common since most banks are corporate entities, but it may arise with Jewish-owned lending institutions or credit unions.

Late Payment Fees

Charging a penalty for late repayment of a loan between Jews may constitute ribbit if the penalty is structured as additional money owed beyond the principal. The halakhic treatment of late fees is complex and depends on how they are framed — consult a rabbi for specific situations.

Business Investments

The heter iska mechanism naturally fits true business investments, where one party provides capital and another provides expertise or labor. In these cases, the profit-sharing structure reflects the actual nature of the relationship.

Who Is Covered?

Between Jews Only

The ribbit prohibition applies only to transactions between Jewish parties. Loans between a Jew and a non-Jew are not subject to this prohibition (Deuteronomy 23:21 explicitly permits charging interest to a foreigner). This distinction has historically shaped Jewish economic activity, enabling Jews to participate in broader financial markets while maintaining internal community norms.

Both Parties Violate

Both the lender and the borrower violate the prohibition. The lender by charging, the borrower by agreeing to pay, the guarantor by facilitating, and the witnesses and scribe by participating in documenting the interest-bearing loan.

The Ethical Vision

The ribbit prohibition reflects a profound ethical vision: within the Jewish community, money should serve relationships, not exploit them. A person in need should be helped — not turned into a source of profit. The Torah envisions a community where lending is an act of chesed (kindness), not a commercial transaction.

This vision does not oppose commerce. The heter iska demonstrates that business investment and profit-sharing are entirely legitimate. The prohibition is specifically against exploiting a person’s need for funds by extracting guaranteed returns regardless of outcomes — which is precisely what interest does.

Frequently Asked Questions

Do I need a heter iska for every loan to a Jewish friend? Only if you are charging or expecting any return beyond the principal amount. If you lend $500 and expect exactly $500 in return, no heter iska is needed. If you want any form of compensation for the loan (including compensation for inflation or opportunity cost), a heter iska should be arranged.

Does ribbit apply to credit card transactions between Jews? If a Jewish merchant uses a credit card processor owned by Jews, and the merchant pays a processing fee, this could potentially involve ribbit issues. In practice, most credit card processors are large corporations, and the transactions are structured in ways that major halakhic authorities have addressed. Consult a rabbi if you are a Jewish merchant using a Jewish-owned payment processor.

Can I give a gift to someone who lent me money? Timing matters. A gift given during the loan period may appear to be ribbit. A gift given well after full repayment, in a context that is clearly unrelated to the loan, is generally permitted. To be safe, some authorities recommend waiting a significant period after repayment before giving gifts to a lender, and ensuring the gift is modest and clearly unconnected to the loan.