The idiom "than one's expenses" means to have more money coming in than going out, or to be living within your means.
Sentences with «than one's expenses»
When it comes to choosing a top performing equity mutual fund, look out for good, consistent performance rather than expense ratio. (blog.roboadviso.com)
The cost of your pet's spay / neuter surgery is a lot less than the expense of having and caring for a litter. (mtsnc.org)
People soon realize that the offer at hand is usually better than the expense of carrying a vacant property through the winter. (realtormag.realtor.org)