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Deposit and security deposit in long-term rental

RentalZone Editorial team · 2026 plan · 05/10/2026 · 5 minute read

Upfront payment, security deposit and monthly fee: discover the differences in long-term rental and how they affect the monthly cost. Clear guide with FAQs.

When considering a long-term rental, the question many drivers ask is: what is the difference between an advance payment, a security deposit and the monthly fee? In short, the advance payment is a sum you pay at the start to reduce the monthly instalment, the security deposit is a guarantee that is returned to you at the end, while the monthly fee is the periodic cost of the rental. Understanding these three elements helps you choose the offer best suited to your budget and avoid surprises.

What is meant by advance payment in long-term rental

The advance payment (often also called the "initial maxi instalment") is the sum of money you pay when signing the long-term rental contract. It is not an additional cost, but a part of the total rental cost that you pay upfront instead of spreading it over the monthly instalments.

  • What it is for: to reduce the amount of the monthly fee. The higher the advance payment, the lower the instalment you will pay each month.
  • How it is calculated: it depends on the value of the vehicle, the duration of the contract and the expected mileage. Under current regulations, the advance payment contributes to the total consideration; for the applicable VAT treatment we recommend checking with your accountant.
  • Is it mandatory? No, many offers provide for zero advance payment. In this case the monthly fee will be higher.

If you want to consider solutions with no advance payment, you can browse the long-term rental offers with no advance payment available on our portal.

Security deposit: a guarantee, not a cost

The security deposit is a sum that the customer pays at the start of the contract as a guarantee for any damage to the vehicle or missed payments. Unlike the advance payment, it does not serve to reduce the monthly fee and is returned at the end of the rental, subject to deductions for damage or penalties.

  • Legal nature: it is an irregular deposit; the supplier may use it, but must return it in full if there are no charges.
  • Amount: it varies according to the type of vehicle and the duration of the contract. It is often equal to one or two months' worth of the monthly fee.
  • Return: it takes place within a term set by the contract, usually after the return of the vehicle and the inspection of its condition.

It is important not to confuse the security deposit with the advance payment: the first is temporary and comes back to you, the second is definitive and reduces the instalments.

Monthly fee: how it is made up and what it includes

The monthly fee is the sum you pay periodically (usually every month) to use the vehicle. It includes a series of services that make long-term rental an "all-inclusive" formula.

  • Vehicle portion: depreciation of the car's value, interest and ancillary services.
  • Services included: RCA insurance, routine and extraordinary maintenance, seasonal tyre changes, road tax and paperwork management.
  • Mileage: the monthly fee is calibrated on an annual km limit; exceeding it entails an extra cost per km.
  • Duration: typical contracts of 24, 36 or 48 months. The longer the duration, the lower the monthly fee for the same advance payment.

To get an idea of the possible combinations, you can use our long-term rental configurator and immediately see the effect of the advance payment and duration on the monthly fee.

Key differences between advance payment, security deposit and monthly fee

Here is a summary table to clarify the differences once and for all:

| Item | When it is paid | What it is for | Return |
|------|----------------|--------------|--------------|
| Advance payment | At the start | To reduce the monthly fee | No |
| Security deposit | At the start | Guarantee for damage or non-payment | Yes, subject to deductions |
| Monthly fee | Every month | Cost of the rental and services | No |

  • Advance payment: it is a definitive payment that lowers the instalment.
  • Security deposit: it is a sum temporarily held, which does not affect the monthly fee.
  • Monthly fee: it is the recurring cost that includes all the services.

How the advance payment and security deposit affect the cost of the rental

Both the advance payment and the security deposit have an impact on initial liquidity, but in different ways.

  • High advance payment: it reduces the monthly fee, but requires more cash upfront. It is suitable for those who want low instalments and have initial funds available.
  • Zero advance payment: higher monthly fee, but no initial outlay beyond any deposit. Ideal for those who prefer not to tie up capital.
  • Security deposit: it does not change the monthly fee, but must be considered in the initial budget because it is a sum that goes out temporarily.

Under current regulations, both the advance payment and the security deposit may have different tax treatments depending on whether the customer is a private individual or a VAT-registered business. We recommend checking the correct tax handling with your accountant.

Long-term rental with no advance payment: when it is worthwhile

Long-term rental with no advance payment is an increasingly requested formula, especially by those who do not want or cannot pay a large initial sum.

  • Advantages: no initial outlay (except any deposit), higher monthly fee but spread over time.
  • Disadvantages: total rental cost slightly higher than a contract with an advance payment.
  • Who it suits: young people, self-employed professionals, companies that prefer to maintain liquidity.

If this is what you need, take a look at the long-term rental offers with no advance payment and compare the monthly fees.

Common mistakes to avoid

  • Confusing the advance payment with the security deposit: the first is a cost, the second a guarantee.
  • Underestimating the deposit: it must be factored into the initial budget, even though it is later returned.
  • Not reading the clauses on damage and return: the deposit may be withheld in full or in part.
  • Choosing too high a down payment: it reduces the monthly fee but depletes your liquidity; consider your financial balance.
  • Ignoring the mileage: a low monthly fee with insufficient km can prove costly in extras.

Frequently asked questions

Is a down payment mandatory in long-term rental?

No, many offers provide for zero down payment. In that case the monthly fee will be higher, but you will not have to pay anything upfront (except any security deposit).

Is the security deposit always refunded?

Yes, except for deductions for damage to the vehicle, extra kilometres or missed payments. The exact conditions are set out in the contract.

Can I use the security deposit to pay the instalments?

No, the security deposit is a guarantee and cannot be used to pay the monthly fees. It is a sum tied up until the end of the contract.

Does the down payment reduce the monthly fee?

Yes, for the same duration and mileage, a higher down payment means a lower monthly fee. The exact ratio depends on the offer.

Conclusion

Now that you know the difference between down payment, security deposit and monthly fee, you can assess your next long-term rental offer with greater awareness. Remember: the down payment lowers the instalment, the deposit is a guarantee that comes back, the monthly fee is the all-inclusive monthly cost. To find the solution best suited to your needs, request a personalised quote from RentalZone: our consultants will guide you through the choice with no obligation.

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