The phrase "only take effect" is correct and can be used in written English.
It means that something will only become valid or operational at a certain point in time. Example: The new policy will only take effect next month, so we will have to wait until then to see any changes in our work procedures.
It will only take effect if states with a combined 270 electoral votes agree to participate.
And that extra infrastructure spending will only take effect from 2015.
That disqualification was in the nature of an additional punishment, which could only take effect upon conviction.
But many of the other big provisions in the bill would only take effect down the road.
Delegates acknowledge that whatever comes out of the talks can only take effect if Mr. Gbagbo accepts it.
It is not due to come into force until 2014, and may only take effect after next year's bonus round.
A further 2,503 were lost in 2009-10, buthehe budget cuts only took effect for a short part of that year.
"That contingency plan only takes effect if we don't get the aid we are requesting from the state and federal government and labor unions," said William T. Cunningham, the mayor's communications director.
Russia in the 1990s actively engaged with the EU, signing a Partnership and Cooperation agreement in 1994, although it only took effect on 30 October 1997 following the first Chechen war, and the next year Russia joined the Council of Europe.
However, Commerce's decision only takes effect if the U.S. International Trade Commission — a U.S. government agency that can act against unfair trade practices — also agrees that Canada did unfairly subsidize the planes.
For such minor infractions penalties may include probation; fines; short-term incarceration; long-term incarceration; suspended sentence, which only takes effect if the convict fails to meet certain conditions; payment of restitution to the victim; community service; or drug and alcohol rehabilitation.
