The best replacement for monthly income is mortgage payment.

The best alternatives to monthly income are rated as following:
★★★★★  mortgage payment
★  net monthly income
  actual monthly income

Your alternative for monthly income is not listed? Suggest!
Speaking about monthly income, one probably shouldn't forget about bonds.

Other search terms related to monthly income and their ratings are:
★★★★★ bonds
★★★★★ investment
You have in mind a companion for monthly income and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of monthly income in all years. Click on graph for more.
monthly income
mortgage payment
net monthly income