The concession follows claims from some media companies that the search engine is profiting from online news pages.
Under the First Click Free programme, publishers can now prevent unrestricted access to subscription websites.
Users who click on more than five articles in a day may be routed to payment or registration pages.
"Previously, each click from a user would be treated as free," Google senior business product manager Josh Cohen said in a blog post.
"Now, we've updated the programme so that publishers can limit users to no more than five pages per day without registering or subscribing."
Google users may start seeing registration pages appear when they click for a sixth time on any given day at websites of publishers using the programme, according to Mr Cohen.
This will only affect websites that currently charge for content.
The announcement is seen as a reaction to concerns in the newspaper industry that Google is using newspaper content unfairly.
Media tycoon Rupert Murdoch, the chairman and chief executive of Newscorp, has accused firms such as Google of profiting from journalism by generating advertising revenue by linking readers to newspaper articles.
Some readers have discovered they can avoid paying subscription fees to newspaper websites by calling up their pages via Google.
This is because Google searches frequently link directly to newspaper articles, bypassing some sites' subscription systems.
Broadcasting and media consultant Steve Hewlett said that Google's response was "a pretty significant move".
"Rupert Murdoch is trying to build a consensus that paying for content online is right and that aggregators like Google that use newspaper content but don't pay for it are doing something wrong," he said.
Search for revenue
Newspapers are increasingly looking for new ways to make money from their online content amid a continuing decline in circulation figures and advertising revenues.
Earlier this week Johnston Press, the UK's largest regional newspaper publisher, announced plans to to begin charging for access to six of its titles online.
The move follows a 42% slump in advertising revenues at the group over the last two years.
Earlier this year, the Daily Mail and General Trust (DMGT) cut 1,000 jobs at its regional arm Northcliffe Media, which publishes more than 100 newspapers in England and Wales.
Newscorp, which owns the Times and the Sun newspapers in the UK, has also been affected by the downturn.
In June, it announced losses of $3.4bn (£2bn) for the previous 12 months, describing the year as "the most difficult in recent history".
It has also revealed plans to begin charging for access to all its online content. The corporation currently charges for access to its US title the Wall Street Journal.