THE NUMBER · THE LOAN · CAPACITY
A property investor collects US$2.4m of rent a year and spends US$0.4m running the building. Interest and principal on its loan come to US$1.6m a year.
// WORKED EXAMPLEHOW THE FACILITY WORKS
Swingline: How Same-Day Money Works in a Revolver
One bank lends today; the syndicate takes its share later.
BY MICHAEL SHANG · SIXTEEN YEARS IN COMMERCIAL BANKING · UPDATED
// THE SHORT ANSWER
A swingline solves a timing problem. A syndicated revolving facility pays out only after the agent has notified every lender and each has sent its share, which commonly needs one to three business days' notice. A swingline lets the borrower draw a limited amount on the morning it asks, from one designated lender or a small group, for a few days, until an ordinary revolver loan funded by the whole syndicate repays it. It adds nothing to the borrower's total limit; it changes how fast part of that limit can be reached, and it leaves the swingline lender carrying the risk alone until the syndicate takes its share.
BASIS Practitioner judgment from sixteen years in commercial banking, set out in How Bankers Think (Highbank Press, 2026). Every borrower on this site is a composite constructed for teaching, not a client. The market is mid-market commercial lending as practised in New Zealand and Australia; where a convention differs elsewhere, the page says so.
// MAKE THE CALL
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// 01 — WHY A SYNDICATE CANNOT LEND TODAY
A revolver from eight banks is eight loans in one document. When the borrower asks to draw, the agent tells each lender its share, each lender arranges funding in the right currency, and the agent pays the total out once it has arrived. Agreements commonly set a notice period of one to three business days, depending on the currency and the rate the loan is priced on; in some US-style agreements a loan at the base rate can be requested on the day itself, but only by a cut-off, with the money arriving later. For most borrowing the notice is no hardship, because a business knows days ahead when it will need money.
Some needs cannot wait. The clearest is a borrower that funds itself with commercial paper, short-dated notes sold to investors and rolled over as they mature. If the market is disrupted on the day a note falls due, the issuer must repay it that day, and the revolver that backs the programme cannot pay out until the end of the week. Other cases are a payment demanded sooner than expected, or one currency arriving a day after another must be paid. The swingline is the bridge across those days.
// 02 — HOW A SWINGLINE WORKS
1 Borrower asks the swingline lender (often the agent's bank) by mid-morning
2 Swingline lender pays out the same day, up to the swingline limit
3 The drawing uses up revolver availability by the same amount
4 Borrower gives ordinary notice for a revolver loan from all lenders
5 That loan repays the swingline within the maximum term, a few days
6 If the borrower defaults first, each lender buys its share of the swingline loan
Three features matter. The swingline is a sub-limit inside the total commitments, so drawing it reduces what remains under the revolver. Its term is short and fixed by the document, often counted in business days, and interest is commonly charged at an overnight or base rate, because a term rate set for one or three months would not suit a loan that lasts three days. And the risk is shared at the end: the other lenders agree, in advance, to take participations in any swingline loan the borrower does not repay, in proportion to their commitments.
Swinglines belong mainly to large syndicated revolvers, especially in US-style documentation and in facilities that back commercial paper. A borrower that banks with one lender or a small club commonly meets the same need with an overdraft from one of its banks, which moves on the day without the machinery.
// 03 — THE EXAMPLE
A listed electricity generator, constructed for this page, has a US$400m revolver from eight banks holding US$50m each, which backs its commercial paper. The agreement requires three business days' notice for a revolver loan and includes a US$40m swingline from the agent's bank, with a maximum term of five business days. Those terms are the example's.
On a Tuesday, US$35m of its paper matures and the market will not take new notes that morning.
Revolver commitments 8 × 50 = 400
Already drawn = 120
Available 400 − 120 = 280
Tuesday: swingline drawn = 35
Revolver still available 280 − 35 = 245
Tuesday: notice for a revolver loan, funded Friday
Each bank's share 35 ÷ 8 = 4.375
Friday: swingline repaid = 35 → 0
The paper is repaid on time, and by Friday the US$35m sits with all eight banks in equal shares. For three days the agent's bank alone held it.
Suppose instead that the generator enters administration on Thursday, before the revolver loan funds. The revolver loan will not be made, but the participation clause still works. Each of the other seven banks pays the agent's bank US$4.375m, US$30.625m in all, and takes a share of the swingline loan. Every bank ends with the same US$4.375m exposure it would have had from a normal drawing. Without that clause, the agent's bank would hold the whole US$35m against an insolvent borrower.
// 04 — HOW IT DIFFERS FROM AN ANCILLARY OVERDRAFT
Both give a syndicated borrower money on the day, and they are easily confused. An overdraft provided as an ancillary facility is one lender's own line, carved out of its share of the revolver, documented on its own terms and run as part of daily banking for as long as the revolver lasts. The ancillary lender carries that risk itself unless and until the facility is accelerated, when an adjustment spreads the losses.
A swingline is meant to last days, not months. It is designed from the start to be replaced by a loan from the whole syndicate, and the other lenders' promise to take participations means the swingline lender carries the risk only briefly. Neither is the same as the backstop itself. The whole revolver is the backstop for the commercial paper; the swingline only brings part of it forward by a few days.
DEFINED IN ONE PARAGRAPH → · PRODUCT FILE: REVOLVING CREDIT FACILITY → · ANCILLARY FACILITY →
// 05 — WHERE IT DECIDES A FILE
For a bank joining the syndicate, the swingline is a risk it takes without choosing the moment. Its promise to buy a participation is often written to hold even after a default, which is the point of it, so the bank's exposure can rise to its full share on the worst day without any request from the borrower to that bank. The credit paper reads the swingline as part of the commitment, not as something beside it.
For the swingline lender, the concern is size and the other lenders. A larger swingline means more risk held alone for longer, and if another syndicate member has failed to fund before, that lender's share may not arrive; agreements commonly let the swingline lender decline new loans, or ask for cash cover, while a defaulting lender remains. For the borrower, the question is whether the limit covers its largest same-day need, such as the biggest day of paper maturities, and whether enough revolver headroom stands behind it, because a swingline cannot pay out against a fully drawn revolver.
// QUESTIONS PEOPLE ASK
- What is a swingline loan?
- It is a short, same-day loan made under a syndicated revolving facility by one designated lender, or a few, rather than by the whole syndicate. The borrower draws it when it cannot wait for the notice an ordinary drawing needs, and repays it within days, usually with a normal revolver loan from all the lenders. It is part of the revolver's total limit, not an addition to it.
- How long can a swingline loan stay outstanding?
- As long as the agreement allows, which is usually a few business days and in some documents up to two weeks or so. The short term is deliberate: the swingline lender is carrying the whole loan alone, and the design assumes that an ordinary revolver loan, shared by the syndicate, will replace it once notice has run. A borrower that needs the money for longer gives notice for a revolver loan in the usual way.
- Does a swingline increase the size of the revolving facility?
- No. The swingline limit sits inside the total commitments, so every dollar drawn under it reduces what can still be drawn as an ordinary revolver loan. If the revolver is fully drawn, the swingline cannot be used until something is repaid. What the swingline adds is speed, not money: it lets part of the existing limit be reached on the day.
- Who bears the risk of a swingline loan if the borrower defaults?
- In the end, all the revolving lenders in proportion to their commitments. Swingline clauses commonly oblige each lender to buy a participation in any swingline loan left unpaid, so that the swingline lender is repaid its excess and every lender holds its ordinary share. Until then, and if another lender fails to pay for its participation, the swingline lender carries the loss, which is why it limits the size and watches the strength of the syndicate.
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