Statute of Limitations for Class B Misdemeanor in Washington

5 min read

Published March 22, 2026 • By DocketMath Team

Overview

In Washington, the statute of limitations (SOL) limits how long the state can wait before filing criminal charges. If the SOL expires, the prosecution generally cannot move forward with the case based on that offense.

For a Class B misdemeanor in Washington, the baseline SOL is governed by RCW 9A.04.080, which sets different limitation periods depending on the type of offense and specific statutory exceptions.

DocketMath’s statute-of-limitations calculator helps you apply these time rules quickly by structuring the key inputs (offense class and relevant exceptions) and then showing the resulting SOL period.

Note: This article explains the Washington criminal SOL framework for Class B misdemeanors. It’s informational only—not legal advice. If you’re making a decision that depends on timing, confirm the specific charging theory and any applicable exceptions with the most current case record.

Limitation period

Baseline SOL for Class B misdemeanors (5 years)

Washington’s default SOL for many misdemeanors is 5 years under RCW 9A.04.080. For Class B misdemeanor charges, the calculator’s starting point is:

  • SOL Period: 5 years
  • Source: RCW 9A.04.080

That “5 years” baseline matters because most timing questions come down to a simple comparison:

  1. Identify the relevant date used to start the clock (often the date of the offense or a legally defined event that starts limitations).
  2. Add the applicable SOL period.
  3. Determine whether filing occurred within the deadline.

How output changes (what the calculator would do)

DocketMath typically treats SOL as a function of:

  • the offense category (here, Class B misdemeanor), and
  • whether a statutory exception applies (which changes the number of years).

So, while the default is 5 years, the result can shorten to 3 years if an exception applies (covered next).

Practical timeline check

If you want a quick, manual sanity check before running DocketMath:

  • Start: offense date (or the date that legally triggers the clock)
  • Finish: start date + 5 years (unless an exception shortens it)
  • Decision point: charge filing date must be on or before the finish date to avoid SOL problems

Even when you’re not doing calculations by hand, it helps to understand what the calculator is modeling.

Key exceptions

Washington’s SOL statute includes exception logic that can reduce the time window from the default 5 years down to 3 years for certain situations.

Your key exception set for this calculator workflow includes:

  • RCW 9A.04.080 — 5 years — exception P1
  • RCW 9A.04.080(1)(j) — 3 years — exception V1
  • null — 3 years — exception V2

Because these exceptions change the length of time, they affect the outcome in a direct way:

  • If no exception applies, you generally use the 5-year window.
  • If an exception applies, you instead use the 3-year window.

Example of how “3 years vs. 5 years” changes the deadline

Consider a hypothetical offense-trigger date:

  • Offense trigger date: January 15, 2020
  • Baseline 5-year deadline: January 15, 2025
  • Shortened 3-year deadline (if exception applies): January 15, 2023

That difference is not cosmetic—it can shift whether a charge is timely by 2 full years.

Pitfall to avoid: assuming “Class B misdemeanor” alone controls everything

Class labels matter, but SOL outcomes can still depend on statutory exception provisions within RCW 9A.04.080. If you only select “Class B misdemeanor” and ignore an applicable exception, you may end up with an incorrect deadline.

Warning: Don’t treat the offense class as the only input. RCW 9A.04.080 includes exception paths that can shorten the SOL period—especially where provisions like RCW 9A.04.080(1)(j) apply.

What to confirm when using the calculator

To get the correct output in DocketMath, confirm the following before clicking calculate:

  • Which SOL lane applies (baseline versus exception)
  • Whether the exception consistent with your charge theory is in play—particularly the 3-year exception associated with **RCW 9A.04.080(1)(j)

Statute citation

The governing Washington SOL statute for these timing rules is:

  • RCW 9A.04.080 — SOL framework for criminal offenses

For the specific periods reflected in this guide:

  • RCW 9A.04.080 — 5 years (exception path labeled P1)
  • RCW 9A.04.080(1)(j) — 3 years (exception path labeled V1)
  • 3 years (exception path labeled V2, reflected in the calculator’s exception mapping)

If you’re building a timeline for a Class B misdemeanor, the most reliable “anchor” is RCW 9A.04.080, then apply the correct exception logic if your situation matches one of the statutory exception paths.

Use the calculator

Use DocketMath’s statute-of-limitations tool to compute the likely SOL deadline for your Washington Class B misdemeanor scenario. You can start here:

To make the output accurate, think about the inputs the calculator needs:

  • Jurisdiction: Washington (US-WA)
  • Offense type: Class B misdemeanor
  • Applicable exception: baseline (5 years) or exception (3 years), depending on your charge details

Understanding the calculator result

When you run the tool, you should expect the output to reflect one of the following:

  • 5-year SOL under RCW 9A.04.080 (baseline path)
  • 3-year SOL under the exception paths tied to RCW 9A.04.080(1)(j) and the additional 3-year mapping shown in the calculator’s exception logic

Inputs that most affect the deadline

Use this checklist to avoid common workflow errors:

If your timeline result is unexpectedly short (3 years instead of 5), treat it as a signal to re-check the exception selection and the connection to RCW 9A.04.080(1)(j).

Sources and references

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

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