The phrase "tighter policy" means adopting stricter rules or measures to control or regulate something.
Sentences with «tighter policy»
This is because it would not be able to resist the currency crisis with tighter policies. (rba.gov.au)
Any attempt to do so (for example, by running a much tighter policy in order to constrain domestic demand) would be counterproductive and would detract from the Bank's broader macroeconomic goals. (rba.gov.au)