The property advertising tax, notary fees, and the real estate security contribution: these three items constitute the unavoidable foundation of mortgage costs. We observe that most borrowers discover their actual amount at the time of signing the authentic deed, whereas these costs should have guided the choice of guarantee beforehand.
Threshold for switching between bank guarantee and conventional mortgage
The guarantee (Crédit Logement, CAMCA, or the bank’s internal guarantee) remains less expensive than the mortgage for most common borrowed amounts. The gap narrows as the guaranteed capital increases, because the property advertising tax applied to the mortgage rises proportionally to the registered amount, while the guarantee commission is capped or follows a decreasing scale.
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The switch occurs when the guarantee organization rejects the file. Non-resident profiles, SCI, credit buybacks with a surplus, bridge loans backed by an atypical property: in these cases, the mortgage becomes the only accessible guarantee, regardless of its additional cost. We recommend systematically comparing before assuming that the bank imposes the mortgage by default.
To accurately estimate the cost and fees of the mortgage on your own borrowed amount, it is necessary to break down each line of the notarial statement rather than relying on a global range.
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Mortgage fees on a real estate loan: breakdown line by line
The notarial deed of mortgage registration generates several distinct lines that online simulators often aggregate into a single total.
- Property advertising tax: calculated on the guaranteed amount (borrowed capital plus accessories). This is the heaviest item. It is not due on subsidized loans (PTZ, PAS) for the portion guaranteed by the State.
- Notary fees: set by decree according to a decreasing proportional scale. They are not negotiable, unlike bank processing fees.
- Real estate security contribution (formerly the mortgage registry): proportional to the registered amount, it compensates the property advertising service for recording the privilege.
- Disbursements and formalities: fees advanced by the notary (land registry extracts, mortgage statements, stamps). Their amount varies from one office to another.
A technical point often overlooked: the calculation base includes accessories, meaning an increase in the borrowed capital intended to cover any late interest or penalties. This increase mechanically inflates each proportional line of the statement.
Difference between new and old
For a new property (VEFA or construction), the property advertising tax benefits from a reduced rate. The savings on this single item can represent a significant portion of the total savings. In contrast, for older properties, the full rate applies without exception.
This distinction changes the profitability calculation of the mortgage compared to the guarantee. On a purchase of a new property with a partially state-guaranteed subsidized loan, the additional cost of the mortgage is significantly reduced compared to a classic old scenario.
Release of mortgage: the hidden cost of an early resale
The conventional mortgage automatically extinguishes one year after the last payment of the loan. As long as this date has not been reached, any resale of the property, any refinancing by another bank, or any total early repayment triggers a release procedure.
This release requires a new notarial deed, with its own fees, real estate security contribution, and disbursements. The release cost adds to any early repayment indemnities (IRA) that may be owed to the bank, which increases the exit bill.
This scenario is precisely what makes the mortgage more expensive than a guarantee over the actual duration of the loan. A borrower who sells before the term (job transfer, divorce, wealth opportunity) pays twice: at registration and at release. The guarantee, on the other hand, generates no release fees and sometimes refunds part of the initial commission.
Credit buyback and double registration
When refinancing a mortgage by a competing institution, the original bank requires the release of its mortgage, and the new bank registers its own. The borrower thus bears the release fees plus the fees for a new mortgage registration. We observe that this scissors effect often cancels out the gain obtained from the decrease in the nominal rate.
Tax deduction of mortgage fees in rental investment
For a property rented unfurnished declared under the real regime, the costs related to the loan guarantee are deductible from rental income. This includes mortgage registration fees, release fees, and borrower insurance premiums related to the loan, just like the loan interest itself.
This deductibility reduces the net cost of the mortgage for the investor subject to a high marginal tax rate. In practice, it makes the gap between mortgage and guarantee less penalizing than in a primary residence, where no deduction is possible.
- Mortgage registration fees: deductible in the year they are paid
- Release fees: deductible if the release occurs within the framework of rental management (credit buyback, resale for reinvestment)
- Borrower insurance premiums: deductible annually over the duration of the loan
The Lemoine law has made changing borrower insurance possible at any time, which constitutes an additional savings lever. Reducing the cost of insurance while deducting the remaining premium optimizes the overall financing cost.
The choice between mortgage and guarantee is not just about comparing two quotes. It depends on the type of property (new or old), the tax regime (primary residence or rental), the likelihood of resale before term, and eligibility for guarantee organizations. Each variable modifies the tipping point, and a poorly calibrated arbitration can cost several thousand euros over the duration of the loan.