The 60-second rule
Commissions are negotiable now; the price gap is the real duel. At $425,000 with a 5% total commission and 2% seller closing costs, the agent path nets $395,250.00. The FSBO path at 97% of value nets $391,298.75 after $10,306.25 buyer-agent comp, $2,400 flat costs, and $8,245 closing — the agent wins by $3,951.25. Default check: $395,250.00 − $391,298.75 = $3,951.25. The FSBO break-even line is 97.97% of value ($416,387.43). But commissions are no longer fixed: the old 6% flips the verdict to FSBO by $298.75, and a 3.5% flat-fee middle path beats the 5% agent by $6,375.00.
The worked example, line by line
Setup: home value $425,000; agent-listed sale at 100% of value with 5% total commission; FSBO sale at 97% with 2.5% buyer-agent comp, $2,400 flat costs; both pay 2% seller closing costs.
Line 1 — the agent leg. Sale = $425,000. Commission = $425,000 × 5% = $21,250.00. Closing = $425,000 × 2% = $8,500.00. Net = $425,000 − $21,250.00 − $8,500.00 = $395,250.00.
Line 2 — the FSBO leg. Sale = $425,000 × 97% = $412,250.00. Buyer-agent comp = $412,250 × 2.5% = $10,306.25. Flat costs = $2,400.00. Closing = $412,250 × 2% = $8,245.00. Net = $412,250.00 − $10,306.25 − $2,400.00 − $8,245.00 = $391,298.75.
Line 3 — the verdict. $395,250.00 − $391,298.75 = $3,951.25 to the agent. The break-even FSBO sale price: ($395,250.00 + $2,400.00) ÷ ($425,000 × 0.955 ÷ 100) = 97.97% of value — FSBO must close at $416,387.43 to tie.
Branch — the hot market (FSBO at 99%): sale = $420,750.00, buyer comp $10,518.75, closing $8,415.00 — net $399,416.25. FSBO wins by $4,166.25. In a market where bidding wars do the pricing work, the agent’s edge evaporates.
Branch — the known buyer (buyer comp 0%): sale = $412,250.00, comp $0.00, closing $8,245.00, flat $2,400.00 — net $401,605.00. FSBO wins by $6,355.00. This is 38% of FSBO sales — and the scenario where FSBO is nearly always the right answer.
Branch — the flat-fee middle path (1% listing + 2.5% buyer comp): modeled as a 3.5% total commission on the agent side: commission $14,875.00 ($4,250.00 listing + $10,625.00 buyer comp), closing $8,500.00 — net $401,625.00. It beats the 5% agent by $6,375.00 and the default FSBO by $10,326.25. You keep the MLS exposure and the agent’s pricing help while the commission shrinks.
Branch — the $1M luxury home: agent net = $1,000,000 × 93% = $930,000.00. FSBO sale = $970,000.00, buyer comp $24,250.00, closing $19,400.00, flat $2,400.00 — net $923,950.00. The agent wins by $6,050.00. Higher prices scale the commission pain, but they scale the pricing risk too.
Branch — the old-school 6% commission: agent net = $425,000.00 − $25,500.00 commission − $8,500.00 closing = $391,000.00; FSBO net unchanged at $391,298.75. FSBO wins by $298.75 — the exact flip point the NAR settlement made obsolete, and why commissions are negotiable now.
Output · formula · meaning
| Output | Formula | What it means |
|---|
| Agent-listed net proceeds | sale − sale × commission% − sale × 2% | $395,250.00 at the defaults — what lands in the seller’s pocket after the commission and closing costs leave the table. |
| FSBO net proceeds | sale − buyer comp − flat costs − sale × 2% | $391,298.75 at the defaults — the FSBO pocket after paying the buyer’s agent, the flat out-of-pocket, and closing. |
| Winner’s edge | |agent net − FSBO net| | $3,951.25 at the defaults — the dollar value of the pricing-and-commission difference. |
| Break-even FSBO sale price | (agent net + flat) ÷ (value × (1 − buyer comp% − 2%) ÷ 100) | 97.97% of value at the defaults — the FSBO sale price that ties the agent net; above it, FSBO wins. |
Who uses this
- The seller interviewing listing agents: runs the default, sees the $3,951.25 gap, then runs the 6% and 3.5% branches — walking into the listing presentation knowing exactly what each commission quote is worth.
- The seller with a buyer already lined up: runs the known-buyer branch — $401,605.00 vs $395,250.00 — and confirms the 38%-of-FSBO scenario where going solo pays.
- The discount-brokerage shopper: runs the flat-fee middle path and learns a 1% listing + 2.5% buyer comp structure beats the full-service agent by $6,375.00 on the same sale price.
- The luxury-home owner: runs the $1M branch and sees the gap widen to $6,050.00 — on high prices, the pricing-expertise argument carries more dollars than the commission costs.
Accuracy & limitations
The calculator’s arithmetic is exact: both legs are computed from your inputs with 2% seller closing costs on each side, and the break-even solves the FSBO sale price that equalizes the nets. The $425,000 default and the 97% FSBO price lean on NAR’s 2025 medians — FSBO $360,000 vs agent-assisted $425,000 — and the post-settlement commission landscape where 5–6% totals are now negotiable and flat-fee options run about 3.5% or 1% listing plus buyer comp. The composition caveat: the NAR FSBO/agent price gap partly reflects that FSBO sales skew toward lower-priced, rural, and known-buyer transactions — no controlled study isolates how much of the gap is causation (worse marketing) versus selection (cheaper homes go FSBO). The 64%-missed-their-price and 40%-didn’t-market figures come from a Clever survey of FSBO sellers, a self-reported sample. Commissions, transfer taxes, and attorney fees vary by state; treat this as a comparison model, not real-estate advice.
Cite this calculatorBright Side Kit. “Realtor vs FSBO: Net Proceeds Duel 2026, Line by Line | Bright Side Kit.”
brightoolbox.com, 2026.
Bright Side Kit. "Realtor vs FSBO: Net Proceeds Duel 2026, Line by Line | Bright Side Kit." https://brightoolbox.com/realtor-vs-fsbo/ Accessed October 24, 2026.Data sources- NAR 2025 Profile of Home Buyers and Sellers — median sale prices: FSBO $360,000 vs agent-assisted $425,000; only ~5% of 2025 sales were FSBO; 38% of FSBO sales went to a known party.
- Clever Real Estate FSBO survey — 64% of FSBO sellers missed their desired price; 40% didn’t actively market their home.
- NAR settlement era reporting — commissions now negotiable; typical totals 5–6%, discount/flat-fee options around 3.5% or 1% listing plus buyer-agent comp; flat-fee MLS entry roughly $200–700.
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Frequently asked questions
How much does a realtor cost to sell a house in 2026?
Typically 5–6% of the sale price, now negotiable. On the page’s $425,000 example, a 5% total commission is $21,250.00. Since the NAR settlement, commissions are no longer effectively fixed — discount and flat-fee options run about 3.5% or 1% listing fee plus buyer-agent compensation, and you should negotiate before signing.
Do FSBO homes really sell for less?
The national medians say yes — FSBO $360,000 vs agent-assisted $425,000 — but the gap is partly composition. FSBO sales skew toward lower-priced, rural, and known-buyer transactions (38% sell to a known party), so no controlled study isolates how much of the gap is worse marketing versus cheaper homes going FSBO. The calculator defaults FSBO to 97% of the home value, a much narrower gap than the raw medians imply.
What is the break-even sale price for FSBO?
The FSBO sale price that ties the agent’s net. At the defaults it’s 97.97% of home value — $416,387.43 on a $425,000 home. Sell above it and FSBO wins; sell below it and the agent wins. Run your own numbers above — the line moves with your commission and flat costs.
Should I still offer buyer-agent compensation as a FSBO seller?
Usually, yes — unless you have a known buyer. The default assumes 2.5%, which keeps your listing visible to the buyer pool. Drop it to 0% only in the known-buyer shortcut (38% of FSBO sales), where the calculator shows the FSBO net jumping to $401,605.00 — a $6,355.00 win over the agent.
What are the real flat costs of selling FSBO?
About $2,400 in the page’s model. The budget: $400 flat-fee MLS entry, $300 professional photos, $1,200 real-estate attorney, $400 pre-listing inspection, $100 miscellaneous. The most commonly forgotten line item is the attorney — in many states a FSBO seller is foolish to close without one.
Is a flat-fee listing service a good middle path?
On the math, it’s the strongest option at the same sale price. A 1% listing fee plus 2.5% buyer comp nets $401,625.00 on the $425,000 example — beating the 5% agent by $6,375.00 and the default FSBO by $10,326.25. You keep MLS exposure and pricing help while the commission shrinks; service levels vary, so compare the contract terms.
When does FSBO win outright?
Three cases. Selling to a known buyer (38% of FSBO sales) — net $401,605.00, a $6,355.00 win. A hot market where bidding wars price the home for you — at 99% of value, net $399,416.25, a $4,166.25 win. Or facing an un-negotiated 6% commission — the agent nets $391,000.00 and FSBO wins by $298.75.