US states ranked by statutory late-payment interest owed on a $10,000 B2B invoice paid 90 days late
Derivation: simple interest at each state's legal DEFAULT rate (the rate that applies when the contract is silent): owed = 10000 x (rate/100/365) x 90.
Source dataset (CC BY 4.0, statute-cited, 51 US jurisdictions): https://myinvoicetemplate.com/data/late-payment-interest-by-state-2026.json
Human-readable table with per-state anchors: https://myinvoicetemplate.com/tools/late-fee-calculator/#ranked
Last verified: 2026-08-19. B2B only — not consumer credit, not residential rent. Not legal advice.

 1. New Mexico — 15% default -> $369.86 (NMSA 1978 §§ 56-8-3, 56-8-5, 56-8-9)
 2. South Dakota — 15% default -> $369.86 (SDCL 54-3-5, 54-3-16, 54-3-1.1)
 3. Idaho — 12% default -> $295.89 (Idaho Code §§ 28-22-104, 28-42-201)
 4. Nebraska — 12% default -> $295.89 (Neb. Rev. Stat. §§ 45-104, 45-101.03, 45-101.04)
 5. Rhode Island — 12% default -> $295.89 (R.I. Gen. Laws §§ 6-26-1, 6-26-2)
 6. Vermont — 12% default -> $295.89 (9 V.S.A. §§ 41a, 46)
 7. Washington — 12% default -> $295.89 (RCW 19.52.010, 19.52.020)
 8. Alaska — 10.5% default -> $258.90 (AS 45.45.010)
 9. Arizona — 10% default -> $246.58 (A.R.S. §§ 44-1201, 44-1202)
10. California — 10% default -> $246.58 (Cal. Civ. Code § 3289(b); Cal. Const. art. XV, § 1)
11. Connecticut — 10% default -> $246.58 (Conn. Gen. Stat. §§ 37-1, 37-3a, 37-4, 37-9)
12. Hawaii — 10% default -> $246.58 (HRS §§ 478-2, 478-4(c))
13. Kansas — 10% default -> $246.58 (K.S.A. 16-201, 16-207)
14. Montana — 10% default -> $246.58 (MCA 31-1-106, 31-1-107)
15. New Hampshire — 10% default -> $246.58 (RSA 336:1)
16. Tennessee — 10% default -> $246.58 (Tenn. Code Ann. §§ 47-14-102, -103, -123)
17. Utah — 10% default -> $246.58 (Utah Code § 15-1-1)
18. Missouri — 9% default -> $221.92 (RSMo 408.020, 408.030, 408.035)
19. New York — 9% default -> $221.92 (CPLR 5004; GOL 5-501; Penal Law 190.40)
20. Oregon — 9% default -> $221.92 (ORS 82.010)
21. South Carolina — 8.75% default -> $215.75 (S.C. Code Ann. §§ 34-31-20, 37-10-106)
22. Colorado — 8% default -> $197.26 (C.R.S. §§ 5-12-101 to -103)
23. Indiana — 8% default -> $197.26 (Ind. Code §§ 24-4.6-1-102, -103)
24. Kentucky — 8% default -> $197.26 (KRS 360.010)
25. Mississippi — 8% default -> $197.26 (Miss. Code Ann. § 75-17-1)
26. North Carolina — 8% default -> $197.26 (N.C.G.S. §§ 24-1, 24-5, 24-1.1, 24-9)
27. Georgia — 7% default -> $172.60 (O.C.G.A. §§ 7-4-2, 7-4-16)
28. Wyoming — 7% default -> $172.60 (Wyo. Stat. § 40-14-106)
29. Alabama — 6% default -> $147.95 (Ala. Code §§ 8-8-1, 8-8-5)
30. Arkansas — 6% default -> $147.95 (Ark. Const. amend. 89; Ark. Code Ann. § 4-57-101(d))
31. District of Columbia — 6% default -> $147.95 (D.C. Code §§ 28-3301, 28-3302, 15-108)
32. Maryland — 6% default -> $147.95 (Md. Const. art. III, § 57; Com. Law §§ 12-102, 12-103)
33. Massachusetts — 6% default -> $147.95 (MGL c.231 § 6C; c.107 § 3; c.271 § 49)
34. Minnesota — 6% default -> $147.95 (Minn. Stat. §§ 334.01, 334.011; § 549.09)
35. North Dakota — 6% default -> $147.95 (N.D.C.C. 47-14-05, 47-14-09)
36. Oklahoma — 6% default -> $147.95 (15 O.S. § 266; Okla. Const. art. XIV, § 2)
37. Pennsylvania — 6% default -> $147.95 (41 P.S. §§ 201, 202)
38. Texas — 6% default -> $147.95 (Tex. Fin. Code §§ 302.002, 303.002, 303.009)
39. Virginia — 6% default -> $147.95 (Va. Code §§ 6.2-301, 6.2-303, 6.2-317)
40. West Virginia — 6% default -> $147.95 (W. Va. Code §§ 47-6-5, 47-6-11)
41. Illinois — 5% default -> $123.29 (815 ILCS 205/2, 205/4)
42. Iowa — 5% default -> $123.29 (Iowa Code § 535.2)
43. Wisconsin — 5% default -> $123.29 (Wis. Stat. §§ 138.04, 138.05)

Variable/formula-rate states (reset periodically by a state authority — check the official page for the live figure):
 - Delaware — Variable (8.75% (since Dec 11, 2025)) (6 Del. C. §§ 2301, 2306)
 - Florida — Variable (8.06% (Jul–Sep 2026)) (Fla. Stat. §§ 687.01, 55.03, 687.02–.03)
 - Louisiana — Variable (7.50% (2026)) (La. R.S. 9:3500, 13:4202; Civ. Code art. 2000)
 - Maine — Variable (6.51% (2026)) (14 M.R.S. §§ 1602-B, 1602-C; 9-A M.R.S. § 1-202(1))
 - Michigan — No automatic rate (4.959% (Jul–Dec 2026)) (MCL 438.31, 438.61, 450.1275; MCL 600.6013)
 - Nevada — Variable (8.75% (Jul–Dec 2026)) (NRS 99.040, 99.050)
 - New Jersey — Variable (4.5% / 6.5% (2026)) (N.J. Ct. R. 4:42-11; N.J.S.A. 31:1-1, 31:1-6; 2C:21-19)
 - Ohio — Variable (7% (2026)) (ORC 1343.03, 5703.47, 1343.01)

Citation: MyInvoiceTemplate, US State Late-Payment Interest Rates (2026), CC BY 4.0, myinvoicetemplate.com/tools/late-fee-calculator/