What it means
A benchmark rate gives lenders and borrowers a shared reference point so that they do not have to agree a new rate every time. STIBOR plays that role in Sweden.
A floating-rate loan might be priced at three-month STIBOR plus a fixed margin, so the interest cost rises and falls as the benchmark moves. The rate is calculated from submissions by a panel of large banks, which state the rate at which they would lend to one another unsecured for each period.
It is published for a set of maturities, ranging from very short periods up to six months. Each maturity reflects the market's view of short-term borrowing costs over that time, plus a small allowance for bank credit risk.
STIBOR moves with the Swedish central bank's policy rate, since expectations about that rate feed into what banks charge each other. If the central bank is expected to raise its rate, three-month STIBOR will tend to rise ahead of the change.
Companies with floating-rate debt therefore watch it as an early signal for their interest bill. Finance teams use STIBOR in loan pricing, in interest rate swaps (agreements that exchange floating payments for fixed ones) and in cash flow forecasts.
A treasurer who wants certainty over interest costs can swap floating STIBOR payments for a fixed rate. The decision depends on whether the fixed rate on offer is better than the likely path of the benchmark.
A nuance is that interbank benchmarks around the world have been reformed since the manipulation scandals of the early 2010s, and many markets have been moving towards overnight risk-free rates. Anyone reading a contract should check which benchmark it references, what the fallback rate is if the benchmark ceases to exist, and how interest is calculated over each period.
Details such as day counts and rate-setting dates can change the final amount.
In practice
Real-world examples.
Example
A Swedish property company borrows SEK 200,000,000 at three-month STIBOR plus 1.8%. Each quarter, the finance team looks up the new rate and calculates the interest due. When the benchmark rises by 0.5%, they see that the annual interest cost climbs by SEK 1,000,000.
Example
An export manufacturer fears that interest rates will rise sharply. Its treasurer arranges an interest rate swap in which it pays a fixed rate and receives three-month STIBOR. This fixes the effective cost of its SEK 80,000,000 loan for five years.
Example
A bank analyst studying the Swedish funding market tracks the gap between STIBOR and the central bank's policy rate. A widening gap suggests banks are worried about credit risk or liquidity. The analyst reports the change to clients so they can review their borrowing plans.
Formula
Calculation
Interest for the period = principal x (STIBOR + margin) x days in period / day count basis
Suppose a company has a floating-rate loan of SEK 50,000,000 priced at three-month STIBOR plus 1.5%. If STIBOR is set at 3.0% for the quarter, the all-in rate is 3.0% + 1.5% = 4.5%. Using a simple quarter of one-fourth of a year, interest is 50,000,000 x 4.5% x 1/4 = SEK 562,500. If STIBOR had been 4.0% instead, the all-in rate would be 5.5% and interest would be 50,000,000 x 5.5% x 1/4 = SEK 687,500, an extra SEK 125,000 for the quarter.Case study
Seen in the real world.
Norrland Timber is an illustrative, fictional forestry business in northern Sweden with a SEK 120,000,000 floating-rate loan priced at three-month STIBOR plus 2.0%. When the benchmark was low, interest cost was manageable, and the board saw no need to hedge.
Over eighteen months the benchmark rose by three percentage points. The annual interest bill on the loan increased by SEK 3,600,000, which cut deeply into the company's profit and nearly breached a covenant on interest cover.
The finance director then arranged a swap that fixed the rate on two-thirds of the loan. The illustrative lesson is that a floating benchmark gives cheap borrowing while rates are low, but it leaves the business exposed when rates climb.
Watch out
Common mistakes.
- Assuming STIBOR is the rate a customer will pay, when loans add a margin on top of the benchmark.
- Forgetting that the rate is fixed for each interest period, so a change in the market during the period does not alter the interest until the next reset.
- Using a benchmark without checking the fallback wording in the contract, which matters if the rate is changed or discontinued.
Questions
People also ask.
What does STIBOR measure?
It measures the rate at which banks state they could borrow Swedish krona from each other without security, for various time periods.
How is it different from the central bank's policy rate?
The policy rate is set directly by the central bank, while STIBOR is derived from bank submissions and reflects market expectations and bank credit risk.
Do I need to know STIBOR if I do not borrow in krona?
Probably not in your own loans, but it is useful for anyone with Swedish subsidiaries, krona debt or exposure to Nordic markets.
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