Keep tabs on

From Fresh Dictionary

English

Phrasal verb

keep tabs on

1. ((idiomatic{{#if:|, {{{2}}}{{#if:|, {{{3}}}{{#if:|, {{{4}}}{{#if:|, {{{5}}}{{#if:|, {{{6}}}{{#if:|, {{{7}}}{{#if:|, {{{8}}}{{#if:|, {{{9}}}}}}}}}}}}}}}}}}})) to monitor; to keep track of; to watch

   If you are careful to keep tabs on your finances, you should be able to stay within a budget.