Wiktionary
tight money
n. (context economics English) A monetary policy that makes money, credit, or both readily available to some borrowers.
WordNet
tight money
n. the economic condition in which credit is difficult to secure and interest rates are high [ant: easy money]
Usage examples of "tight money".
In the cramped environment of an Arctic research station, especially in one established with minimum funding in an age of tight money and especially during particularly extended tours of duty, the average person’.
I worry about this most of all, because I know how tight money is for you.