How to Tell If Legal Information Online Is Still Current

Legal information has an unusual problem online. A page can be accurate, well-sourced and clearly written on the day it’s published, and later become wrong without a word changing. Legislatures amend statutes, agencies revise rules, and courts reinterpret both. The page may stay the same, rank the same, and get quoted the same.

For researchers, that makes currency a separate question from accuracy. AOFIRS has examined how research in the age of AI changes how people find and trust information. AI tools and search summaries can combine sources from different years without flagging which ones are out of date, which makes checking currency more important, not less. This guide covers practical ways to tell whether a legal claim still holds, and for which date.

Why legal information goes stale

Legal content can age quickly, for several reasons:

• State legislatures pass many bills each session, including small procedural changes that rarely make news
• New laws often take effect months after they’re signed so a rule can be enacted but not yet in force
• Agencies update forms, fees, and procedures on their own schedules
• Court decisions can narrow, expand, or overturn how a statute is applied
• Secondary sources such as blogs, templates, and guides may stay online for years without a substantive review

The result is a body of online material that was correct when written but may not answer a current question correctly.

A worked example: notarization in Montana vehicle transfers

State notarization rules for vehicle transfer paperwork are a good test case. The rules are state-specific, change occasionally, and get repeated across template sites and guides.

For years, Montana appeared on lists of states that required notarization for certain vehicle transfer documents. In 2025, Montana removed the notarization requirement, according to ConsumerShield’s bill-of-sale guide. That’s a useful lead, but a researcher shouldn’t stop there. The next step is to find out exactly what changed, for which documents, and from when.

Two more sources fill in the picture, and they don’t agree on every detail:

• The National Notary Association’s summary of Montana House Bill 165 says the law removes notarization requirements for transfers between individuals, and for bills of sale or conditional sales contracts with affidavits used when a title isn’t available. It lists the effective date as October 1, 2025.
• The Montana Motor Vehicle Division’s FAQ says HB 165 removed the notarization requirement for individuals as of October 2, 2025, and that notarization is no longer required on a Montana title. That statement concerns titles specifically.

So the three sources describe overlapping but different documents: a bill of sale guide, a legal summary covering titles and certain affidavits, and an agency statement about titles. They also differ by one day on timing. For most purposes the difference won’t matter. For a transaction dated October 1, 2025, it would. The way to settle it is to read the enacted bill and any effective date provision, rather than treating any one secondary source or agency FAQ as the final word.

The example also shows the currency problem itself. Someone using a guide published in 2023 to answer a question about a transfer today would likely reach the wrong conclusion about Montana, even though that guide was accurate when it was written.

Checks that show whether a page is current

Start with the jurisdiction and the event date

Before checking whether a source is current, decide which date matters. The newest rule isn’t necessarily the one that governs an older transaction or event. First, identify the jurisdiction and the date of the event. A historical question may call for the law as it stood then, along with any transitional provisions.

Find the date on the page that actually matters

Many pages show a date, but it may not be the one you need. Distinguish between:

• The publication date, when the page first appeared
• The “last updated” date, which may reflect a cosmetic edit rather than a legal review
• The effective date of the law or rule described
• The date the author last checked the underlying source, which is rarely stated

A page updated last month can still describe a rule that changed years earlier. A page labeled “updated for 2026” that names no specific change deserves the same caution as an undated one.

Trace the claim to its source

A reliable legal summary should point to something primary: a statute section, a regulation, an agency page or an official form. If it doesn’t, treat it as a lead, not an answer.

When a source is cited:

• Open it and confirm it says what the summary claims
• Check whether the citation points to the current version or an older one
• Look for amendment notes, history lines, or effective date annotations

Check the legislature and the agency directly

State legislature websites usually offer bill search, session laws, and the current code. Searching the topic along with the current and previous session years can surface recent changes that secondary sources haven’t caught.

Agency pages are often the quickest way to see how a rule is being applied. Keep in mind that agency guidance isn’t the same as the statute or regulation behind it. Official FAQs and procedure pages can contain errors, simplify, or lag behind a change, so they should point you back to the law rather than replace it.

Check how courts have treated the rule

Statutes and regulations tell only part of the story. Where a claim depends on a court decision, check whether that decision was appealed, reversed or limited by later cases. A legal citator, where available, shows later judicial treatment. Read the relevant decisions themselves rather than relying on how a secondary source characterizes them.

Use point-in-time tools where they exist

For federal regulations, the eCFR lets users view the Code of Federal Regulations at points in time back to January 2017, and compare versions between two dates. The eCFR isn’t an official legal edition, but its timeline features help with both kinds of question: whether a rule has changed since a source was written, and what the rule said on a particular event date. Some state codes offer similar version history, though coverage varies.

Watch for copied content

When several sites use near-identical wording for the same legal claim, they may all trace back to one original, possibly an old one. Repetition across template sites is a reason to find the primary source, not a form of confirmation.

Special caution with AI answers

AI tools can help with orienting on a legal question, but they carry specific currency risks:

• Training data has a cutoff so recent amendments may be missing
• Answers that search the web can still favor older, higher-ranking pages
• Summaries may merge sources from different years into one confident answer
• Citations, when provided, may point to secondary pages rather than the law itself

Treat an AI answer on a state-specific rule as a starting hypothesis, and confirm it against the enacted law before relying on it.

Building currency checks into a research workflow

A few habits make currency checks routine rather than occasional:

• Record the jurisdiction and event date the question concerns
• Record the date you accessed each source, not only the date it was published
• Note effective dates separately from publication dates
• Keep a primary source for every legal claim in a report or brief
• Note where sources disagree, and how you resolved it
• Recheck state-specific rules shortly before a deliverable goes out, especially after a legislative session ends

Online legal information is only as current as its last real review, and only relevant to the date it’s being applied to. Part of the researcher’s job is working out both.