A cash reserve is the single most stabilizing thing a commission-based broker can build, and the one most often neglected when income is good. The logic is simple: your income arrives in lumps and your costs do not, so you need a buffer that lets a gap between closings be an inconvenience rather than an emergency. This guide covers how to size a reserve to your actual business, how to build it when income is irregular, and how it works alongside other tools rather than competing with them.
Generic advice says hold three to six months of expenses. For a commission-based broker that is a starting point, not an answer, because your gaps are driven by your deal cycle, not by a calendar. A broker whose deals close every few weeks needs a different buffer than one working long, lumpy deals that pay months apart. Your reserve should be sized to your reality, not a rule of thumb.
Work from your own numbers in three steps.
A broker with longer deal cycles and a heavier execution-occupancy lag needs a larger reserve than the generic three months, because their realistic gap is longer. Size to your worst plausible stretch, not your average one.
The hard part is funding a reserve when income itself is lumpy. The discipline that works is to treat the reserve as a fixed allocation off every commission, not as whatever is left over, because nothing is ever left over. When a commission lands, route a set percentage into the reserve before lifestyle spending expands to fill the rest. Building it in good months is what makes the lean ones survivable. Until the reserve is full, treat that allocation as non-negotiable as a tax payment.
A reserve should be liquid and separate. Liquid, so you can reach it instantly when a gap hits, which rules out anything you cannot access quickly without penalty. Separate, so it is not sitting in your operating account quietly getting spent. The point is friction in the right direction: easy to access in a real gap, slightly out of sight day to day. This is general guidance, not investment advice, and how you hold cash is a question for your own financial advisor.
Brokers sometimes frame it as reserve versus advance. They actually solve different problems and work best together. A reserve covers gaps when you do not have an earned commission to draw on, a genuine drought. An advance covers the case where you have earned a commission but it is stuck behind an occupancy date, a timing gap. One is your own saved cash for true gaps. The other pulls forward money you have already earned. A broker with a reserve still uses advances for stuck commissions, and a broker who advances still needs a reserve for the dry stretches when there is nothing to advance. How advances work is in the guide on commission advances.
Enough to cover your realistic worst-case gap between net commission payments, which is your combined monthly outflow times the length of that gap, plus a margin. For brokers with long deal cycles, that is often more than the generic three to six months.
Allocate a fixed percentage of every commission to the reserve before lifestyle spending expands, treating it as non-negotiable until it is full. Building it in strong months is what makes the lean ones manageable.
Yes. An advance only helps when you have an earned commission to advance. A reserve covers true droughts when there is nothing to draw on. They solve different problems and work best together.
This guide is general information for commercial real estate brokers and is not financial, tax, or legal advice. How you hold and manage cash is a question for your own financial advisor.
