Browse Banking

Spreads, Discounts, and Marker Rates

Banking terms for rate spreads, net interest spreads, bill rates, implied rates, index rates, and merchant discount rates.

Spreads, discounts, and marker rates are quoted differences, reference points, or pricing conventions used to connect a bank rate with a benchmark, funding cost, instrument yield, or transaction fee.

Use this branch when the important number is not a standalone rate, but a margin over a benchmark, a discount-style quote, an implied rate, or a spread between earning assets and funding costs.

Key Terms in This Branch

TermWhat it clarifies
Interest Rate SpreadThe difference between two rates, often a benchmark and a product rate.
Net Interest Rate SpreadThe spread between what a bank earns on assets and pays on funding.
Index RateA reference rate used to set or reset another rate.
Implied RateA rate inferred from prices, cash flows, or related market quotes.
Bill RateA short-term bill quote or yield convention.
Merchant Discount Rate (MDR)A card-acceptance fee rate charged to merchants.

Why It Matters

Spreads and discount conventions are compact, but they hide assumptions. A loan priced at “index plus 250 basis points” depends on the index, reset date, margin, cap, floor, and fees. A merchant discount rate affects payment economics rather than traditional loan interest.

Common Mistakes

  • Treating a spread as the total rate instead of the add-on to a reference rate.
  • Comparing spreads without matching term, credit risk, collateral, and fee treatment.
  • Confusing discount yield, interest yield, and implied rate.
  • Reading merchant discount rate as a borrowing rate rather than a payment-acceptance cost.

In this section

Choose a subsection first. Deeper term pages live inside each subsection, which keeps large topic hubs readable.

Bill Rate

The Bill Rate, or discount rate, is the rate at which bills of exchange are discounted on the discount market. It varies based on the quality of the bill and the associated risk.

Implied Rate

An implied rate is a rate inferred from related prices, spot and forward rates, or other market relationships.

Index Rate

An index rate is a benchmark rate used to reset variable-rate loans, deposits, mortgages, or other financial contracts.

Interest Rate Spread

Interest Rate Spread refers to the difference between the interest rates earned on assets and the interest rates paid on liabilities.

Merchant Discount Rate (MDR)

The merchant discount rate is the fee rate merchants pay to process card transactions through payment networks and acquirers.

Net Interest Rate Spread

Net interest rate spread measures the difference between the yield earned on assets and the cost paid on funding.

Revised on Sunday, June 21, 2026