in effect as of

USAGE SUMMARY

"in effect as of" is a correct and usable phrase in written English.
It is used to indicate when a particular rule, policy, agreement, or decision has taken effect or started to be applied. For example: "The new tax rate is in effect as of January 1, 2021."

✓ Grammatically correct

News & Media

Formal & Business

Science

Human-verified examples from authoritative sources

Exact Expressions

10 human-written examples

The guide gives locations, phone numbers, hours of operation, city license numbers and the rates that were in effect as of last March.

The New York Times

The decision, announced and put in effect as of today, was signed on Sunday by Mark Rey, under secretary for natural resources and environment in the Agriculture Department and a former timber industry lobbyist.

The New York Times

The International Civil Aviation Organization's 36-state governing council said the prohibition would be in effect as of 1 April and remain in force until a new fire-resistant packaging standard was designed to transport the batteries.

The Guardian

According to the M.T.A.'s Web site, the following irregularities were in effect as of 6 45 p.m.: – No B, D, N, Q, or R service from Manhattan to Brooklyn.

The New York Times

Ten players, including the star quarterbacks Tom Brady, Peyton Manning and Drew Brees, filed an antitrust lawsuit against the N.F.L. in the court and asked for an injunction to prevent the league from initiating a lockout, which the N.F.L. said was in effect as of 12 01 a.m.

The New York Times - Sports

The blockade of the access point to the burst pipe remains in effect as of press time.

Vice

Human-verified similar examples from authoritative sources

Similar Expressions

48 human-written examples

More recently, some courts have ruled that H.M.O.'s can be held liable for the negligence of their doctors because the doctors act, in effect, as agents of the health plans.

The New York Times

This year, very quietly, the Bank of England stands to receive a £20bn windfall in effect as some of those gilts are redeemed; £8.4bn has landed already.

The Guardian

The suit seeks, in effect, as one of the N.A.A.C.P. delegates said, "to prevent the school board from even thinking about possibly studying desegregation".

The New Yorker

Such commissions could be construed, in effect, as part of the underwriting fees earned by the bank.

The Economist

The Serb-inhabited north of Kosovo (north Mitrovica and beyond) will ignore independence and continue to operate as it does now which is, in effect, as part of Serbia.

The Economist

Expert writing Tips

Best practice

Use "in effect as of" to clearly communicate when a change or decision becomes operational, especially in formal announcements or legal documents.

Common error

Avoid using "in effect as of" loosely with an implied or unclear date. Always explicitly state the date to prevent misinterpretations about when something becomes operational. If the exact date is uncertain, consider rephrasing to indicate a general timeframe rather than a specific effective date.

Linguistic Context

The phrase "in effect as of" functions as a prepositional phrase that modifies a verb or noun, indicating the specific date or time when something becomes operational or binding. Ludwig's examples showcase its use in legal, regulatory, and general announcements.

Expression frequency: Uncommon

Frequent in

News & Media

50%

Formal & Business

20%

Science

15%

Less common in

Encyclopedias

5%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

The phrase "in effect as of" serves to pinpoint the exact date a rule, policy, or decision becomes active. It's grammatically sound and primarily used in news, business, and scientific contexts, as confirmed by Ludwig. Though not overly frequent, it's a clear and reliable way to communicate effective dates. Ludwig AI indicates the phrase is a correct and usable way to indicate the start date of some specific condition.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

effective from

This alternative directly replaces "in effect as of" with a simpler, more concise prepositional phrase.

operative since

Swaps 'in effect' with operative. This alternative is more formal and emphasizes the operational start.

valid as of

This option exchanges "in effect" with "valid". It focuses on the legal or official standing from a date.

in force from

Replaces "in effect as of" with "in force from", stressing the enforcement aspect from a certain date.

taking effect on

This alternative replaces "in effect as of" with "taking effect on", highlighting the action of becoming effective.

commencing on

This is a more formal way of saying something starts on a specific date, replacing the entire phrase.

beginning with

This alternative focuses on the start of a period or condition from a specific date.

starting from

This offers a less formal way to indicate the commencement date, simpler and more direct.

applicable from

Using applicable instead of in effect. Emphasizes that something is relevant or can be applied since a particular date.

with effect from

A more formal and British English alternative that clearly indicates the starting date of a rule or law.

FAQs

How do I use "in effect as of" in a sentence?

Use "in effect as of" to specify when a new rule, policy, or law begins to apply. For example, "The new regulations are "effective from" July 26, 2025."

What are some alternatives to "in effect as of"?

Alternatives include "effective from", "operative since", or "valid as of", depending on the context.

Is there a difference between "in effect as of" and "effective immediately"?

"In effect as of" specifies a future date, while "effective immediately" means the rule or policy starts now. They are not interchangeable.

Can "in effect as of" be used in both formal and informal writing?

While generally suitable for formal writing, "in effect as of" can also be used in less formal contexts where clarity and precision are needed.