The Magpies have been linked with a number of targets in recent weeks, while manager Alan Pardew has also revealed his hopes of adding to his squad.
However, Kinnear has confirmed that the club will stick of a policy of only signing players if the deal is right for them, as he believes the squad is in a strong position already.
"Given the business we did last January and with the addition of Loic [Remy] in the summer, it is our belief that we now have a squad that, in terms of quality and quantity, is stronger than we had in the season we finished fifth, and should enable the manager to deal with every reasonable eventuality," Kinnear said in his programme notes.
"For obvious reasons, in January 2013 we did significant business, but this year we can afford to take a more calculated and considered approach - if the right player becomes available for the right price and we are sure he can improve on what we have in the squad, then we may do business.
"If not, then we won't. That's how it should be. We will not be rushed or forced into making knee-jerk decisions, which experience tells us more often than not turn out to be costly mistakes."
Newcastle face Manchester City in the Premier League today.