Statute of Limitations for Unjust Enrichment / Restitution in Arkansas

Overview

In Arkansas, “unjust enrichment” and “restitution” claims often get treated like other civil claims for timing purposes: plaintiffs must file within the applicable statute of limitations (SOL) window. In practice, the SOL question usually arises when there’s a delay between the event that triggered the dispute and the date a lawsuit (or demand for payment) is actually filed.

DocketMath’s statute-of-limitations calculator helps you model that timing using Arkansas’s general civil limitations period. For this topic, the key point is that Arkansas does not provide a separate, claim-type-specific SOL rule for unjust enrichment/restitution that you can reliably cite as a dedicated “unjust enrichment period” in the general rule set. Instead, the calculator should use the general default period.

Limitation period

Arkansas default (general) limitations window

DocketMath uses the general default SOL period for civil actions when no claim-type-specific sub-rule is found. For Arkansas, the general period is:

• 6 years

That means if the facts supporting unjust enrichment or restitution arose on (or are tied to) a particular triggering date, you generally count forward 6 years from the applicable start date used in your analysis.

How to think about the “start date”

While the blog topic here focuses on the length of the limitations period, the output from DocketMath depends on what you enter as the start date. Typically, timing models use one of these approaches:

• Event date approach: the date the enrichment/restitution right accrued based on the underlying facts.
• Notice/accrual approach: the date the claim accrued under the governing rule for when the plaintiff could bring the action.

Because SOL computation is extremely fact-dependent, DocketMath’s calculator is designed to let you plug in the date you are using as the “start date,” then see the deadline that results.

What changes the deadline inside the calculator

When you run the calculation, the deadline shifts if you change any of the following inputs:

• Start date: moving the start date forward shortens the remaining time.
• Time framing: the calculator applies the configured SOL length (here, 6 years).
• Filing deadline output: the computed “last day to file” reflects the end of the SOL window based on the chosen start date.

Use the calculator to test scenarios, such as:

• “If the trigger date was March 1, 2020, what’s the deadline?”
• “If I treat accrual as later due to discovery/knowledge facts, how does the deadline move?”

Practical checklist before you calculate

Before relying on any SOL deadline, gather the following facts:

Key exceptions

Arkansas’s general default period is the starting point for unjust enrichment/restitution when no specific rule applies. Still, SOL outcomes can change due to exceptions—especially those that affect tolling (pausing) or accrual (when the clock starts).

Because this blog uses the general default period in the absence of a dedicated unjust enrichment/restitution sub-rule, keep your eye on these categories:

1) Tolling events that pause the clock

Some doctrines can suspend the SOL clock under certain circumstances (for example, legal disabilities or other statutorily defined situations). Those rules are not “timing by category” (unjust enrichment vs. something else), but rather “timing by circumstance.”

If tolling applies, the 6-year window may be extended beyond what a simple “start date + 6 years” model produces.

2) Accrual disputes that shift the start date

Even with a fixed 6-year length, disputes often turn on when the claim accrued. If a party argues the claim accrued later than the other side claims, the deadline changes accordingly.

DocketMath helps you model this by recalculating with different candidate start dates. The goal is not to assume the “right” start date, but to quantify how much the timing swings.

3) Remedies that are framed differently

Although unjust enrichment and restitution are often discussed together, litigation strategies sometimes frame claims with overlapping labels (e.g., restitution as a remedy rather than a standalone theory). The SOL analysis can shift when the underlying cause of action effectively becomes something else (such as a statutory cause of action or a contract-based claim).

Statute citation

Arkansas’s configured general default SOL for this analysis is:

• Ark. Code Ann. § 5-1-109(b)(2)

  • **6 years (general SOL period)

This 6-year figure is used as the default because no claim-type-specific sub-rule was found for unjust enrichment/restitution in the general rule set referenced for this calculator configuration.

Use the calculator

Ready to run the numbers in DocketMath? Use this link to open the timing tool:

Open DocketMath Statute of Limitations Calculator

Inputs to use

In the calculator, focus on these practical inputs:

• Start date (the date you believe the unjust enrichment/restitution claim accrued)
• Jurisdiction (set to Arkansas (US-AR))

Output you’ll get

DocketMath will compute:

• Deadline date = start date + 6 years (under the general default period)

Scenario testing example (how outputs change)

Consider two competing start dates:

• Start date A: earlier event date → earlier SOL deadline
• Start date B: later accrual/knowledge date → later SOL deadline

Run both scenarios in DocketMath to see the difference in the “last day to file” output. This is especially helpful when the dispute includes arguments about notice, knowledge, or when the claim became actionable.

Quick action step

Before you rely on the output, verify that the date you selected as the “start date” matches the factual theory you plan to use. If your start date is off by months, the deadline will be off by months—because the SOL length is fixed.

Sources and references

Start with the primary authority for Arkansas and confirm the effective date before relying on any output. If the rule has been amended, update the inputs and rerun the calculation.

• Ark. Code Ann. § 16-56-105

Related reading

• Choosing the right statute of limitations tool for Vermont — Tool comparison
• Statute of limitations in Singapore: how to estimate the deadline — How-to guide
• Choosing the right statute of limitations tool for Connecticut — Tool comparison