I guess an explanation of the low cash flow on the property would help a bunch? What is it? Would you sell or exchange for something that throws off cash?
I just assume that any spare cashflow goes to paying off the loans. So in my FIRE calculations I don't include any income from these until they are paid off. That's why I was wondering whether I needed to have a portion of equities that would sustain a SWR until they were paid off, or it means that I need to sell them.
Why do you own the rental properties?
I'm not sure you have a plan for these assets. Like a lot of people, especially in Australia, you probably bought geared (leveraged) investment properties "because real estate seems to always go up." However, you don't eat assets, you eat income. Either the properties have to cash flow, or they have to be sold to produce income. Your FIRE plan should include deleveraging these properties and using the net income they produce as part of your retirement income, selling the properties periodically and using the net proceeds for income or to reinvest in something else for income, or some combination of these paths.
The direct answer to your question is to estimate how much income the real estate can be expected to produce at FIRE. Subtract that income and any pension or other guaranteed income from the income you estimate you will need at that point. Your paper assets will need to provide the remaining income needed. If you think 4 percent is a safe withdrawal rate, then do the math to see what you need in paper assets.
I do have a plan, I just didn't expect to be retiring this early. The plan was always to progressively sell some of the assets when I retired (to manage tax) and use the proceeds to pay off the others leaving a paid off, or near paid off assets OR to just pay the assets off (which is what my current FIRE spreadsheet assumes). Problem with the second approach is that it literally takes all the cashflow until we are traditional retirement age, which is when I was planning to retire when I started down this path.
We chose to pay our home off in preference to the investment properties as our home interest is not tax deductible here, where as investment property interest is tax deductible.
I like the idea of keeping the properties, solely because while property does move in fits and starts, it generally has pretty good appreciation over time. Having the property also provides a good hedge against inflation as well. But you're right, we should probably sell some and pay off others. I'll run some numbers on that.
Australian PensionIn Australia we don't have the concept of a pension like you (I'm assuming you're in the US). Our pensions are funded out of general government revenue and they are both income and asset tested. The rules for a home owning couple (non home owner limits are larger) are:
1. Income test: your pension starts to reduce once your income per week is >A$144 (US$103) and cuts out completely when your income reaches A$1,451 (US$1,044.72)
2. Asset test: your pension starts to cut out once your assets are > A$291,500 (US$209,880) and cuts out completely when your assets are > A$1,078,500 (US$776,500). This test is changing in 2017 such that full pension is received under A$375,000 (US$270,000) but cuts out completely at A$823,000 (US$592,560).
It will be the asset test that gets most RE folks.
I assume at all times that I won't get a pension. Its a safely net, just in case the market goes haywire!