Every purchase and sale transaction of a used vehicle involves a series of documents that, as a dealership, you must keep meticulously. It is not just about complying with the law: keeping a complete document file protects your business against claims, tax inspections, title transfers and audits. It also gives the customer confidence and makes the vehicle easier to trace.
In this article we review all the documentation that a dealership must keep, both when buying and selling a used car, with recommendations on best practice and tools such as Dealcar for efficient management.
Basic documentation in every purchase and sale transaction
Regardless of the car's origin or the type of buyer, there are essential documents that must be present in any file:
Signed purchase and sale contract: with full details of both parties, date, price, vehicle description and terms. Essential in the event of any legal claim or for the change of ownership.
National ID, foreign ID or company tax ID of the buyer and seller: to verify identity and prevent impersonation. In transactions with companies, include powers of attorney or representation if applicable.
Vehicle registration certificate: official document that proves ownership and registration of the vehicle.
Technical data sheet and valid MOT certificate: proves that the car is type-approved and legally fit to drive. Mandatory for the change of ownership.
Sales or purchase invoice: in transactions between businesses or from dealership to private individual. If the margin scheme or standard VAT applies, the tax regime must be stated correctly.
Additional documents depending on the type of transaction
Depending on the vehicle's origin or the buyer's profile, it is advisable (and in some cases mandatory) to keep also:
Proof of payment of the most recent road tax (IVTM): although it is not a legal requirement for the transfer, many autonomous communities require it.
Outstanding charges or encumbrances report: allows you to check that the vehicle has no liens, retention-of-title clauses or court orders.
Maintenance and repair history: although not mandatory, it provides transparency and helps justify the vehicle's condition to the customer.
Proofs of payment, deposits or instalments paid in advance: important for demonstrating the source of funds in the event of tax inspections.
Mileage report or periodic inspection records: increasingly valued by buyers to prevent fraud and guarantee the accuracy of the odometer.
Documentation after the sale: notifications and change of ownership
Once the sale has been completed, the dealership must make sure to:
Keep a copy of all the documentation handed over to the buyer.
Submit or facilitate the transfer notification to the DGT (official form).
File the proof of change of ownership, especially if it is handled by an external agency.
Record the transaction internally in its accounting or management system.
Attach a copy of the proof of payment of fees or taxes (ITP, if applicable in transactions with private individuals).
Risks of not keeping the documentation
Not having good document organisation can lead to:
Fines or tax penalties: for unexplained transactions, incomplete returns or an incorrect tax regime.
Legal problems: if a buyer makes a claim for hidden defects and there is no clear contract or repair history.
Administrative blocks: when trying to carry out transfers if permits, technical data sheets or ID documents are missing.
Loss of trust: in the event of an audit or inspection, the lack of documentation can affect the business's reputation.
Best practices for document management
Digitise each file: create a folder per vehicle or transaction with all documents scanned.
Classify by transaction type: purchase, sale, margin scheme, standard VAT, import, etc.
Use approved templates: for contracts, invoices, reservations or receipts. Avoid generic templates that do not comply with regulations.
Keep documents for at least 5 years: for both tax and legal purposes. Some documents may need to be kept longer (up to 10 years for certain accounting obligations).
Make back-ups: both in digital format and on secure external storage.
How Dealcar helps organise all the documentation
Dealcar is designed to make it easier for the dealership to control each transaction:
Complete digital files: link each vehicle to its purchase, sale, maintenance, contracts, invoices, etc. documentation.
Automatic classification by transaction type and tax regime.
Document generation: legally validated contracts, invoices and templates.
Alerts and tracking: for pending documentation, upcoming MOTs, expiry dates, payments, etc.
Secure archive and traceability: quick access in the event of any inspection or customer claim.
With Dealcar, the dealership works with greater security, efficiency and regulatory compliance.
Conclusion
Keeping documentation properly for every purchase and sale is not an option; it is a legal, tax and commercial necessity. A dealership that documents its transactions well is better protected, inspires more trust and operates more professionally.
Relying on solutions such as Dealcar makes this task much easier, reducing errors and ensuring that every transaction is fully supported.
FAQs
How long should a dealership keep the documents for a sale? Recommended: at least 5 years. In some cases, up to 10 years for accounting or tax matters.
Is it mandatory to keep the contract if the car has already been transferred? Yes. It may be needed in the event of claims or inspections.
Can I digitise the documents and throw away the originals? It is advisable to keep the original versions of key documents (signatures, contracts, ID documents). But the digital copy makes access and organisation much easier.
Does Dealcar allow you to store all this documentation? Yes. It allows you to associate it with each vehicle, categorise it, generate alerts and keep it always available.
What happens if I sell a car with incomplete documents? You may have problems with the transfer, lose sales or face customer claims.
Every purchase and sale transaction of a used vehicle involves a series of documents that, as a dealership, you must keep meticulously. It is not just about complying with the law: keeping a complete document file protects your business against claims, tax inspections, title transfers and audits. It also gives the customer confidence and makes the vehicle easier to trace.
In this article we review all the documentation that a dealership must keep, both when buying and selling a used car, with recommendations on best practice and tools such as Dealcar for efficient management.
Basic documentation in every purchase and sale transaction
Regardless of the car's origin or the type of buyer, there are essential documents that must be present in any file:
Signed purchase and sale contract: with full details of both parties, date, price, vehicle description and terms. Essential in the event of any legal claim or for the change of ownership.
National ID, foreign ID or company tax ID of the buyer and seller: to verify identity and prevent impersonation. In transactions with companies, include powers of attorney or representation if applicable.
Vehicle registration certificate: official document that proves ownership and registration of the vehicle.
Technical data sheet and valid MOT certificate: proves that the car is type-approved and legally fit to drive. Mandatory for the change of ownership.
Sales or purchase invoice: in transactions between businesses or from dealership to private individual. If the margin scheme or standard VAT applies, the tax regime must be stated correctly.
Additional documents depending on the type of transaction
Depending on the vehicle's origin or the buyer's profile, it is advisable (and in some cases mandatory) to keep also:
Proof of payment of the most recent road tax (IVTM): although it is not a legal requirement for the transfer, many autonomous communities require it.
Outstanding charges or encumbrances report: allows you to check that the vehicle has no liens, retention-of-title clauses or court orders.
Maintenance and repair history: although not mandatory, it provides transparency and helps justify the vehicle's condition to the customer.
Proofs of payment, deposits or instalments paid in advance: important for demonstrating the source of funds in the event of tax inspections.
Mileage report or periodic inspection records: increasingly valued by buyers to prevent fraud and guarantee the accuracy of the odometer.
Documentation after the sale: notifications and change of ownership
Once the sale has been completed, the dealership must make sure to:
Keep a copy of all the documentation handed over to the buyer.
Submit or facilitate the transfer notification to the DGT (official form).
File the proof of change of ownership, especially if it is handled by an external agency.
Record the transaction internally in its accounting or management system.
Attach a copy of the proof of payment of fees or taxes (ITP, if applicable in transactions with private individuals).
Risks of not keeping the documentation
Not having good document organisation can lead to:
Fines or tax penalties: for unexplained transactions, incomplete returns or an incorrect tax regime.
Legal problems: if a buyer makes a claim for hidden defects and there is no clear contract or repair history.
Administrative blocks: when trying to carry out transfers if permits, technical data sheets or ID documents are missing.
Loss of trust: in the event of an audit or inspection, the lack of documentation can affect the business's reputation.
Best practices for document management
Digitise each file: create a folder per vehicle or transaction with all documents scanned.
Classify by transaction type: purchase, sale, margin scheme, standard VAT, import, etc.
Use approved templates: for contracts, invoices, reservations or receipts. Avoid generic templates that do not comply with regulations.
Keep documents for at least 5 years: for both tax and legal purposes. Some documents may need to be kept longer (up to 10 years for certain accounting obligations).
Make back-ups: both in digital format and on secure external storage.
How Dealcar helps organise all the documentation
Dealcar is designed to make it easier for the dealership to control each transaction:
Complete digital files: link each vehicle to its purchase, sale, maintenance, contracts, invoices, etc. documentation.
Automatic classification by transaction type and tax regime.
Document generation: legally validated contracts, invoices and templates.
Alerts and tracking: for pending documentation, upcoming MOTs, expiry dates, payments, etc.
Secure archive and traceability: quick access in the event of any inspection or customer claim.
With Dealcar, the dealership works with greater security, efficiency and regulatory compliance.
Conclusion
Keeping documentation properly for every purchase and sale is not an option; it is a legal, tax and commercial necessity. A dealership that documents its transactions well is better protected, inspires more trust and operates more professionally.
Relying on solutions such as Dealcar makes this task much easier, reducing errors and ensuring that every transaction is fully supported.
FAQs
How long should a dealership keep the documents for a sale? Recommended: at least 5 years. In some cases, up to 10 years for accounting or tax matters.
Is it mandatory to keep the contract if the car has already been transferred? Yes. It may be needed in the event of claims or inspections.
Can I digitise the documents and throw away the originals? It is advisable to keep the original versions of key documents (signatures, contracts, ID documents). But the digital copy makes access and organisation much easier.
Does Dealcar allow you to store all this documentation? Yes. It allows you to associate it with each vehicle, categorise it, generate alerts and keep it always available.
What happens if I sell a car with incomplete documents? You may have problems with the transfer, lose sales or face customer claims.
