tightwad

/T AY1 T W AA0 D/
noun
  1. 1

    One who is stingy, overly cautious, or defensive with money (usually mildly derisive).

    โ€œThat tightwad would drive ten miles to save a few cents on gas.โ€

Source: https://en.wiktionary.org/wiki/tightwad