Reviewed for current 2026 law
South Dakota Arrears Interest Calculator
Model interest on unpaid principal using the Category D support-debt rate.
Reviewed by SupportDecode Editorial Team Page content reviewed Sources Methodology Update log
arrears calculator
Estimated arrears with interest: $5,006.00
Interest of $6.00 at 0.12% simple per year (SDCL §§ 25-7A-14 and 54-3-16).
| Line item | Amount |
|---|---|
| Arrears principalSDCL § 25-7A-14, interest on support debt or judgment (South Dakota Legislature) | $5,000.00 |
| Simple interest at 0.12% per year for 12 month(s) (SDCL §§ 25-7A-14 and 54-3-16)Category D is one percent per month or fraction thereof on unpaid principal. The projection uses the 12 percent annual simple equivalent and does not charge interest on interest.SDCL § 25-7A-14, interest on support debt or judgment (South Dakota Legislature) | $6.00 |
| Arrears principal plus interestSDCL § 25-7A-14, interest on support debt or judgment (South Dakota Legislature) | $5,006.00 |
Assumptions
- Accrual period expressed as 12 month(s); partial months prorate.
Estimate only. The court or state agency calculation controls.
South Dakota arrears interest under SDCL §§ 25-7A-14 and 54-3-16; rules last reviewed 2026-08-09.
Support debt uses Category D
Section 25-7A-14 authorizes collection on unpaid principal at the Category D rate.
Section 54-3-16 defines that rate as one percent per month or fraction.
Model unpaid principal only
Use an official ledger and account for each payment.
What this estimate includes
- Simple 12% annual equivalent
What it leaves out
- Interest on interest
- Fees and allocation disputes
South Dakota arrears calculator FAQs
What rate applies?
Category D: one percent per month or fraction.
Is it charged on principal?
The statute specifies unpaid principal balance.
Does the tool include payments?
Use the inputs to reflect the balance and period being modeled.
Can interstate law differ?
The issuing state law can govern under UIFSA.
Are fees included?
No.
Is this legal advice?
No.
Official sources
Official sources last verified: .
- SDCL § 25-7A-14, interest on support debt or judgment
South Dakota Legislature Last checked
- SDCL § 54-3-16, official state interest rates
South Dakota Legislature Last checked
Changelog: page reviewed . Material changes appear in the update log.