Reference · Alaska · 2026
Alaska late payment interest rate
When your contract sets no rate, the Alaska figure for interest on an overdue B2B invoice is 10.5%, under Alaska Stat. § 45.45.010(a).
On money after it is due. In litigation the rate drops to a Fed-discount-based formula (6.75% for 2026, AS 09.30.070).
- Rate
- 10.5%
- Statute
- Alaska Stat. § 45.45.010(a)
- Type
- Fixed by statute.
- Source
- codes.findlaw.com · verified July 9, 2026
Statute text read on codes.findlaw.com, a legal mirror, because the official Alaska site blocks automated access. Confirm it against the official code before relying on it in a dispute.
What 10.5% comes to on an unpaid invoice
Simple interest at 10.5% a year on a 365-day year. Count the days from when interest starts to run in Alaska, which is not always the due date.
| Invoice | 30 days | 60 days | 90 days |
|---|---|---|---|
| $5,000 | $43.15 | $86.30 | $129.45 |
| $10,000 | $86.30 | $172.60 | $258.90 |
| $50,000 | $431.51 | $863.01 | $1,294.52 |
Work out the interest on your invoice
Prefilled with Alaska's legal rate of 10.5%. If your contract sets a rate, use that instead.
Interest you can claim
$172.60
$10,172.60 with the invoice · $2.88 a day
The ceiling
How high can a late fee go in Alaska?
Your contract decides. The rate above only applies when your terms are silent. Between businesses, an agreed late-interest rate or late fee replaces it, within two limits: the state's ceiling on agreed rates, and the rule that a late fee must compensate you rather than punish the customer.
Alaska's ceiling: No cap on an agreed rate above $25,000 (Alaska Stat. § 45.45.010).
On smaller invoices, check Alaska's general limit before using the common 1.5%-a-month (18%) rate.
Ceiling checked September 12, 2026.
Late payment wording for a Alaska invoice
On your invoice
Payment is due by the date shown on this invoice. Late payments are subject to interest at 10.5% a year, the legal rate under Alaska Stat. § 45.45.010(a).
This restates what Alaska law applies when your contract is silent. If your contract sets a rate, quote that instead. The wording doesn't say when interest starts, because that differs by state; the note at the top of this page covers it where Alaska law sets it.
How Alaska compares
Of the 46 states with a rate that applies on its own, 6 set a higher one and 39 a lower one. The middle of the range is 8%.
Interest is the fallback. Getting paid on time is the plan.
DueTrail turns overdue invoices into managed cases with reviewable reminders and recorded promises to pay, so invoices get settled before anyone reaches for Alaska Stat. § 45.45.010(a).