Deferred Net Settlement (DNS)
Deferred net settlement (DNS) is a method in which a payment system collects payments over a period, offsets what participants owe each other, and settles only the net amounts at set times. It saves liquidity but delays finality.
Also called: DNS · net settlement · deferred net settlement system · end-of-day settlement
Most retail payment systems work this way, including ACH networks, card schemes and cheque clearing. Thousands of payments flow between banks during a cycle. At the cut-off the system works out each bank's single net position against all the others, and those positions are settled, usually across accounts at the central bank.
The advantage is efficiency. A bank that sends 900 million and receives 880 million needs only 20 million of liquidity instead of 900 million. See netting. The cost is time and exposure: until the net settlement completes, the underlying payments are not final, and if a participant cannot cover its position the system must have a way to deal with it, such as collateral pools, loss-sharing or, in older designs, unwinding that participant's payments.
The alternative is real-time gross settlement, where each payment settles individually and immediately. Modern instant-payment systems often combine the two, giving the customer an immediate final credit while banks settle between themselves in frequent cycles backed by prefunded balances.
Commonly confused with
| Term | How it differs |
|---|---|
| RTGS | RTGS settles every payment one by one, at once and in full. Deferred net settlement batches payments and settles the differences later. |
See also
- NettingNetting is offsetting mutual obligations so that only the difference actually moves. Two parties that have been paying each other all day settle one payment for the net amount, which cuts both the funds transferred and the liquidity each side must hold to support them.
- RTGSRTGS stands for real-time gross settlement: a system that settles each payment individually and finally in central bank money, rather than offsetting many payments against each other and settling only the difference at the end of a cycle.
- Payment FinalityPayment finality is the point at which a transfer of funds becomes irrevocable and unconditional: it cannot be recalled by the sender, reversed by the system or unwound if a participant becomes insolvent. Before that point a payment is still a promise.
- Settlement RiskSettlement risk is the risk that a payment or trade does not complete as expected because a party fails to deliver what it owes, on time or at all, after its counterparty has already performed.
- ACHACH is the batch system for domestic bank-to-bank debits and credits in the United States. Payments are grouped into files, exchanged between banks and settled on a processing schedule rather than one at a time, which makes ACH cheap, slower than a wire, and reversible within defined return windows.
- SettlementSettlement is the point at which value actually moves between parties and the obligation between them is discharged. It is a separate step from clearing, which only works out who owes what, and from finality, which is the moment the transfer can no longer be reversed.