I'm a 1-1/2 years into FIRE, age 59-1/2. I sit on the board of a company which I own fairly significant stock in so get directors fees and quarterly stock dividends for some income. Also own a couple farms which generate income. Wife also has a part time job that makes a little income. These items cover a bit more than half of our annual spending.
We have cash in savings accounts, a 401K, CD's, and some mutual funds that can be drawn on if / when needed. Also own quite a bit of paid for real estate, farms, vacation homes, etc. We are paying expensive ACA health insurance now to the tune of $14,000 per year and will be doing so for several more years until we both reach medicare age. So far, we are just using the savings account to make up what our income doesn't cover and have the ability to do that for quite a while. Think I will wait till about 65 or 67 -vs- 62.5 to draw social security so we get a little more.
At some point in the next few years we will start taking from the 401K, so the cash savings doesn't get too far depleted. We could take $40-50K out of it almost indefinitely if it's investments keep working decently. Use of the mutual funds and taking social security will come after that. If we have other needs beyond that we have the ability to sell that company stock mentioned above, tap into the CD's or sell off some real estate. The real estate will probably be the last to go, would like to give most of that to family.