Real estate agent fees: seller or buyer – who really pays?

Agent fees: a tiny line that reshapes your buy or rent math

On a listing, the note “agency fees paid by seller” or “paid by buyer” looks secondary. In reality, it changes the total cost of buying, your mortgage amount, and even the outcome of your buy or rent decision.

Our simulator buy-or-rent.net includes a dedicated parameter for agent fees (montant_fa). Understanding who pays the real estate commission, how it is calculated and how it impacts closing costs, the loan and your long‑term wealth is key before deciding whether to buy or keep renting.

1. How real estate agent commissions work

1.1. Typical levels: 3–5% of the sale price

In most residential sales, the real estate commission is around 3–5% of the sale price including VAT, sometimes more on small properties. Example:

• Listing price: €300,000
• Agency fee: 4% = €12,000
• Net to seller: €288,000

Legally, the person who signed the brokerage contract (usually the seller) owes the commission. But in the ad and in the deed, the fees can be mentioned as “paid by buyer” or “paid by seller”. That single line changes:

• the base used to calculate notary / closing fees,
• the amount you borrow,
• and thus your monthly payment and total interest cost.

1.2. Three key prices: net seller, commission, total (FAI)

Listings should clearly show:

• Net seller price: what the seller actually receives.
• Commission: in euros and as a percentage.
• Total price including fees (FAI in French): what the buyer pays in total.

Typical example:

• Net seller: €300,000
• Commission: 5% = €15,000
• Total price (FAI): €315,000

For a serious buy or rent calculation, you cannot just look at €315,000. You need to know which part is the taxable base for notary fees and which part is the agent fee parameter (montant_fa) that you might fund with savings or with the loan.

2. When the buyer officially pays the agent fees

2.1. Impact on notary / closing costs

In many countries using civil-law notaries (like France), if agent fees are paid by the buyer and clearly separated in the contract, the notary fees are calculated only on the net seller price. That reduces your total acquisition cost.

Take a concrete case in an older property:

• Net seller price: €300,000
• Agent fee (5%) paid by buyer: €15,000
• Total paid by buyer: €315,000
• Average notary fees in existing stock: 7.5%

Case 1 – Fees paid by buyer and separated in the deed:

• Notary base: €300,000
• Notary fees ≈ 300,000 × 7.5% = €22,500
• Total acquisition cost: 315,000 + 22,500 = €337,500

Case 2 – Fees included in sale price (or paid by seller):

• Notary base: €315,000
• Notary fees ≈ 315,000 × 7.5% = €23,625
• Total acquisition cost: 315,000 + 23,625 = €338,625

The difference is €1,125 in notary fees alone, just from where the commission sits. In the simulator, this is captured by the montant_fa parameter and the way you choose to model tax treatment.

2.2. Impact on your mortgage

Assume you finance the full acquisition cost with a mortgage at:

• Loan rate: 3.6% fixed, 25 years
• Borrower insurance rate: 0.30% of borrowed capital

Using the two total costs above:

• Loan A: €337,500 → monthly payment (principal + interest only) ≈ €1,709
• Loan B: €338,625 → monthly payment ≈ €1,715

Only about €6 per month difference — but over 25 years, that’s over €1,800 of extra interest and insurance. In a buy or rent comparison, that amount could instead be invested in an ETF or savings product at an investment rate of 3–5% per year.

2.3. Full example: buy vs rent with high agency fees

Imagine you’re hesitating between buying and continuing to rent:

• Current rent: €1,250/month, with annual rent increase of 2% (linked to an index like IRL).
• Net seller price: €280,000
• Agent fees (6%) paid by buyer: €16,800
• Notary fees (7.5% on €280,000): €21,000
• Down payment: €30,000

Total to fund:

• Price + agent + notary = 280,000 + 16,800 + 21,000 = €317,800
• Mortgage needed = 317,800 – 30,000 = €287,800

At 3.6% over 25 years, the monthly payment (excl. insurance) is about €1,456/month versus your current €1,250 rent that will rise yearly. In the simulator, montant_fa lets you see precisely how much that 6% commission inflates your buying scenario compared with a no-agency or lower-fee scenario.

3. When the seller officially pays the agent fees

3.1. Legal wording vs economic reality

When the listing says “agent fees paid by seller”, the total price including fees is usually the base for notary fees. But economically, the seller often bakes the commission into the asking price.

Example:

• Target net to seller: €300,000
• Commission: 5% = €15,000
• Asking price FAI: €315,000, “fees paid by seller”

For the buyer, the bottom line is similar to the previous example, but:

• Notary fees are calculated on €315,000 instead of €300,000.
• There’s no separate montant_fa line in the contract.
• Negotiation tends to focus on the global price, not on the fee split.

3.2. Two similar listings, two different total costs

Compare two very similar properties:

• Property A: €315,000 FAI, fees paid by seller, 5% commission.
• Property B: €300,000 net seller + €15,000 fees paid by buyer.

For the buyer, both look like €315,000. But for notary fees:

• Property A: notary ≈ 315,000 × 7.5% = €23,625
• Property B: notary ≈ 300,000 × 7.5% = €22,500

€1,125 difference again. If those €1,125 stay invested at an investment rate of 4% over 20 years, they grow to around €2,500. Small line on the listing, non‑trivial impact on your long‑term wealth and your buy or rent comparison.

4. Can you negotiate who pays the agent fees?

4.1. What is actually negotiable

In practice, several elements can be discussed with the agent and the seller:

• The commission rate: for example, from 5% down to 3%.
• Whether the fees are written as “paid by seller” or “paid by buyer”.
• The split between net seller price and commission, as long as it reflects reality and follows legal rules.

However:

• Fees must remain consistent with the agency’s published fee schedule.
• The deed must be transparent for tax authorities and the notary.

Shifting fees to the buyer side to lower the taxable base for notary fees is common in some markets, but it must stay within the legal framework and be validated by the notary.

4.2. How it feeds into your buy or rent strategy

Negotiating the montant_fa can significantly change your numbers:

• On a €400,000 property, cutting fees from 5% to 3% saves you €8,000.
• Those €8,000 can either reduce the capital you borrow, or stay invested.

Two options to compare in the simulator:

• Option 1: use the €8,000 as extra down payment → lower monthly payments and less interest at 3.6%.
• Option 2: keep the €8,000 invested at an investment rate of 4% while renting.

Depending on your assumptions (annual inflation, rent indexation, future property tax, property appreciation), the best choice is not obvious. That’s why a data‑driven buy or rent simulator is useful.

5. Agent fees are just one piece of the ownership cost puzzle

5.1. Other ownership costs you must factor in

To compare buying vs renting honestly, you need to look beyond the commission and include:

• Notary / closing costs: typically 7–8% in existing homes, 2–3% in new builds.
• Property tax: from roughly €450 to over €5,000 per year depending on city, often with annual property tax increases.
• Renovation and maintenance (montant travaux): especially for energy upgrades impacting the energy performance rating.
• Borrower insurance: around 0.25–0.45% of capital, added on top of the 3.6% loan rate.
• Annual inflation: which erodes the real value of fixed mortgage payments, but also erodes cash if you stay in low‑yield savings as a renter.

As a renter, you avoid property tax and big renovation bills, but you face annual rent increases and must decide how to invest the money you don’t put into an owner‑occupied home.

5.2. A 10‑year example: ownership vs renting

Scenario A – You buy:

• Net seller price: €260,000
• Agent fees (4%) paid by buyer: €10,400
• Notary fees (7.5% of €260,000): €19,500
• Property tax: €1,200/year, with 2% annual property tax increase
• Loan rate: 3.6%, insurance: 0.30%

Scenario B – You rent:

• Rent: €1,100/month, 2% annual rent increase
• No purchase agent fees, no notary fees.
• You invest the equivalent of the down payment + avoided costs at a 4% investment rate.

In our tool, montant_fa changes your initial cash outflow in Scenario A, and therefore the amount you can invest in Scenario B. Over 10 years, the gap in net wealth (home equity after mortgage payments vs invested capital as a renter) can swing by tens of thousands of euros depending solely on this parameter.

6. Using the simulator to understand who should pay agent fees

6.1. Playing with the montant_fa parameter

On buy-or-rent.net, the montant_fa field captures the total agent fees. To really understand “who pays agent fees” in financial terms, try several setups:

• Scenario 1: high agent fees (5–6%) paid by buyer → lower notary base.
• Scenario 2: lower fees (2–3%) paid by seller → higher notary base.
• Scenario 3: no agency (montant_fa = 0) as a benchmark.

Then compare, at 10, 15 or 20 years:

• total cost of ownership (interest, insurance, property tax, renovations),
• total cost of renting (indexed rents),
• final net wealth in each case.

6.2. No universal rule, only numbers that fit your situation

There is no one‑size‑fits‑all rule like “it’s always better when the seller pays” or “always shift fees to the buyer”. The best option depends on:

• the commission level,
• your down payment and your ability to invest spare cash,
• interest rates (loan rate and investment rate),
• expected property tax and its revaluation,
• your time horizon (5, 10, 20+ years).

The simulator does not give personal financial advice; it simply provides transparent numbers so you can see how agent fees and their allocation affect your own buy or rent trade‑off. Always consider your personal situation and, if needed, talk to a qualified advisor.

Conclusion: who pays agent fees really matters in a buy or rent decision

Whether agent fees are formally paid by the seller or by the buyer, they have tangible effects on:

• notary / closing costs,
• your mortgage size and total interest at 3.6%,
• how much cash you can keep invested elsewhere,
• and ultimately, your long‑term wealth in a buy or rent comparison.

There is no universal answer to whether you should buy or rent, or who should carry the commission. It depends entirely on your numbers, your horizon, and your assumptions about inflation, rents and property taxes. This article is not personalized financial advice; treat it as a framework and always run your own calculations.

The most effective way to answer “who should pay agent fees?” for your case is to tweak montant_fa and the other parameters (loan rate, investment rate, inflation, property tax, rent growth) in a dedicated calculator.

Simulate your situation on buy-or-rent.net and see in minutes how agent commissions and their allocation between seller and buyer reshape your numbers.