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12 deals at $450k: the capped 70/30 pays $128,500, uncapped pays $103,950, the 100% shop pays $142,500 — but sells you no leads.
The brokerage question is not "what's the split" — it is what the split buys and when it stops. On 12 deals at a $450k average, a capped 70/30 pays $128,500; the same split uncapped pays $103,950 (the cap is worth $24,550); and a 100% fee shop at $500/mo pays $142,500 but hands you no leads, no training, and no backstop. This calculator runs your actual production through all three models so the recruiting brochures have to compete on math.
Agents use it at renewal time: on 12 deals the capped 70/30 beats uncapped by $24,550, and the 100% fee shop wins past $200k GCI — if you no longer need the leads.
A cap converts the broker's percentage into a fixed annual cost: you pay the split (say 30%) only until your total broker share hits the cap ($20k in the example), then keep 100% for the rest of the year. The breakeven is mechanical — the cap hits at cap ÷ broker share of GCI ($66,667 GCI at a 30% share with a $20k cap) — so past that production level, every additional dollar of GCI is yours. Who wins: capped models decisively favor productive agents — the example year saves $24,550 over the uncapped split — which is why top producers cluster at capped shops, while new agents producing under the cap threshold pay identically under either model and should choose on training and leads instead. Watch the fine print: caps reset annually (usually on your anniversary), some brokerages add franchise fees of 5–8% BEFORE the split, and "cap" marketing sometimes excludes royalty and tech fees that continue past the cap.
On pure math, yes past roughly $200k GCI — the example shows $142,500 versus $128,500 capped — but the monthly fee is owed in slow months too, and the sticker price understates the real one: E&O insurance, tech fees, and transaction fees stack another $100–300/mo, and no one hands you floor calls, leads, training, or a managing broker who catches your contract mistakes. The honest test: where did last year's deals come from? If your book is repeat and referral clients who follow YOU, the brokerage is a compliance utility — pay the utility rate. If deals still arrive via broker leads, floor time, or relocation networks, the split is buying your pipeline and the "savings" of a fee shop are an illusion. Transaction coordinators and E&O become your problem to buy separately at a fee shop — price them in before comparing. The hybrid many productive agents land on: capped national brand for the E&O umbrella and legal backstop, own sphere for the leads.
Brokerage shopping is the smallest lever — production levers dwarf it. Average price point: moving from $300k to $450k homes is a 50% raise on identical deal count, and it comes from farming a higher-priced zip, not working harder. Listing-side share: listings leverage your time (one listing appointment can produce the sign calls that sell three more); buyer-side work burns hours per dollar — mature agents run 60%+ listing side. Referral-fee discipline: relocation and referral-network leads take 25–35% off the top, quietly re-creating the split you escaped — build the direct sphere instead. Team math inverts everything: joining a team at 50% is expensive for established agents but rational for new ones, because the rainmaker's leads replace the 12–18 months of unpaid prospecting that washes most new licensees out. And the silent killer: franchise fees quoted pre- or post-split reorder every comparison — ask each brokerage for a written net-sheet on YOUR last 12 months of production, and the recruiting brochures stop mattering.