Custom Davilex integration development
Appfront builds custom Davilex integrations that automate your accounting and invoicing, whether your data comes from your webshop, CRM or in-house application. We set up sales invoices, customers, VAT codes, general ledger postings and bank transactions to flow through automatically, so you no longer need to enter anything twice. Your books stay up to date, and you can focus on running your business rather than posting entries by hand.
What is a Davilex integration?
Davilex is Dutch accounting and invoicing software for freelancers, start-ups and SMEs, part of Visma. The package helps business owners create invoices, keep track of VAT, connect directly to their bank and gain insight into their figures. Davilex comes in several editions, from an entry-level package for small businesses to a more extensive package with additional functionality.
In practice, a custom integration means exchanging data automatically between Davilex and your other systems. Think of webshop orders being recorded as sales invoices in your bookkeeping, customers and contacts staying in sync with your CRM, VAT codes and general ledger accounts being applied consistently, and bank transactions arriving as suggested bookings. This way, you avoid duplicate work and manual typing errors.
Appfront builds to the OWASP ASVS security standard and uses the integration options Davilex offers, including the direct bank integration and Davilex E3-Connect. We align data mapping, accounting logic and error handling with your actual administrative processes, so the integration grows with your business and stays reliable even at peak volumes.
Invoicing booked automatically
Sales invoices from your webshop or own system are recorded automatically as bookings in Davilex, including the correct VAT codes and ledger accounts. No more manual re-entry, and your revenue is always current in your books.
Customers and figures in sync
Customers and contacts stay consistent between Davilex and your CRM or webshop, so you work with the same data everywhere. Your financial figures and outstanding items remain up to date, giving you faster and more reliable insight.
Bank and VAT streamlined
Davilex retrieves bank transactions through the direct bank integration as booking proposals. We connect your other systems to it so that payments, invoices and VAT are processed consistently, meaning less reconciliation work and a reliable basis for your VAT return.
Our development process for Davilex integrations
We work to a proven methodology that removes uncertainty early and delivers a stable integration. From an initial analysis of your administrative processes, data flows and connected systems through to go-live and ongoing management, every step is aimed at an integration that you can understand and trust.
We map out which data needs to flow between Davilex and your other systems, in which direction, and which bookkeeping logic, such as VAT codes and ledger mapping, applies.
We design the integration architecture, choose the right authentication and integration method, and draw up an error-handling strategy.
Implementation with automated tests, structured logging and monitoring. You see working builds along the way.
Controlled go-live with data validation and a safety net, followed by ongoing management and further development.
What a Davilex integration actually delivers
Every Davilex integration is set up specifically for your type of administration, data flows and connected systems. Below are the features we most often deliver for businesses that use Davilex as their accounting and invoicing package.
API integration & authentication
We build the integration on the capabilities of Davilex and Davilex E3-Connect, with secure authentication and data exchange. Where needed, we add a middleware layer that normalises, validates and monitors data passing between Davilex and your webshop, CRM or in-house application.
Sales invoice sync
Sales invoices from your webshop or in-house system are automatically recorded as bookings in Davilex, with the correct customer, VAT code and ledger account. We can feed status updates such as paid or outstanding back to the source system, so both systems stay in agreement.
Customers & relationships
Customers and relationships stay in sync between Davilex and your CRM or webshop. New customers are created automatically, and changes to address and invoicing details carry through, so you always work with the same up-to-date relationship data across every system.
VAT & general ledger
We ensure VAT codes and general ledger accounts are applied consistently to every automated entry. Correct mapping prevents errors in your bookkeeping and keeps your VAT overview and general ledger reliable as the basis for your tax return.
Bank transactions & scan & recognise
Davilex retrieves bank transactions through the direct bank integration and offers recognition of purchase documents. We connect your systems to it so that payments, invoices and booking proposals match up and reconciling outstanding items runs more smoothly.
Reporting & export
We make data from Davilex available to your dashboards, reports or external systems. This lets you link revenue, outstanding items and VAT overviews to your own insights and, if you wish, supply structured exports to your bookkeeper or accountant.
Typical use cases in practice
A Davilex integration looks very different from one business to the next. We see a number of recurring patterns, and for each of them we have a working setup that pays close attention to data mapping, VAT codes and reliable processing.
Sole traders and freelancers
Freelancers who invoice through Davilex and keep their own books but lose time retyping data from their webshop, time tracking or invoicing process by hand. We have sales invoices and contacts post into Davilex automatically, so the bookkeeping keeps itself up to date. See also our API integrations and Jortt integration.
SME business owners
Growing SMEs with higher transaction volumes, several sales channels and stricter demands on their bookkeeping. We connect Davilex to your CRM, webshop and in-house software, with close attention to consistent VAT codes and general ledger mapping, so your team spends less time on manual work and the figures stay reliable.
Webshops & e-commerce
Webshops on platforms such as WooCommerce, Shopify or a custom build that want orders to be written automatically to Davilex as sales invoices. Orders, customer details and VAT flow across, so your bookkeeping keeps pace with your sales. Read more about our e-commerce development.
Start-ups & accountancy firms
Start-up founders who want their bookkeeping set up properly from day one, and accountancy firms managing multiple Davilex administrations. With a reliable, automated integration between Davilex and your source and reporting systems, you spend less time on manual work and every set of books stays current.
Technology we use
We build Davilex integrations using the connectivity options offered by Davilex and Davilex E3-Connect, combined with the backend stack that suits you. The exact choice depends on your source systems and data flows, so your own team or supplier can manage or further develop the integration.
Why choose Appfront for your Davilex integration?
Appfront has extensive experience building API integrations for a wide range of organisations in the Netherlands. We always start with a thorough analysis of your existing systems and processes. An integration should not only work technically, but also add practical value to the way you work.
For every integration, we write clear documentation and make sure your own team, or any future supplier, can understand and manage it. No black box, just transparent code and clear agreements on monitoring, alerting and maintenance.
You work with a dedicated point of contact who understands both the technical and the functional side. This keeps communication short, prevents misunderstandings and speeds up decisions when choices need to be made during development.
See also our wider services around API integrations, middleware, custom software development and web app development.
- Experience with bookkeeping integrations, VAT codes and general ledger mapping
- Specialists in integrations with webshops, CRM and in-house software
- Familiar with Davilex E3-Connect and the direct bank integration
- Secure by default: secrets in vaults, encrypted connections, scoped permissions
- Structured error handling and retry mechanisms
- Comprehensive logging and monitoring from day one
- Clear documentation your team can read and manage
- A fixed point of contact, no account managers passed around
- Ongoing maintenance and proactive further development
- A way of working tailored to your existing administration and IT landscape
Security and privacy in Davilex integrations
An accounting integration always processes personal data and financially sensitive information: customer details, invoices, VAT and bank transactions. Appfront builds to the OWASP ASVS. Among other things, that means credentials and keys in secure vaults, encrypted connections, scoped permissions and regular audits of the data flows between Davilex and your other systems.
Financial data calls for extra care. We document the data flows, data mapping and integration points so your record of processing activities is complete and you can demonstrate compliance with the GDPR. We process only the data the integration needs, and logging creates a traceable record of what was exchanged and when.
More on our security approach: information security policy and CVD policy.
- GDPR-compliant data processing and data minimisation
- Encryption in transit (TLS 1.2+) and at rest
- Role-based access and least-privilege principles
- Audit logs with traceable data flows
- Automatic retries and dead-letter queues
- Monitoring and alerting for anomalies
- Secrets management in line with best practice
- Documentation for your record of processing activities
Frequently asked questions about Davilex integrations
Answers to the questions we are asked most often about Davilex integrations.
A Davilex integration is a technical link between Davilex and another system, such as your webshop, CRM, invoicing process or in-house application. Data such as sales invoices, customers and contacts, VAT codes, general ledger entries and bank transactions is exchanged automatically rather than retyped by hand. Davilex offers, among other options, a direct bank integration and connectivity via Davilex E3-Connect. An integration can be simple (writing webshop orders out as sales invoices) or extensive (two-way synchronisation of contacts, invoices and the general ledger, with error handling and logging).
A Davilex integration suits you if you use Davilex as your accounting package and want to avoid manually re-entering data between your webshop, CRM or custom software and your bookkeeping. It is well suited to freelancers, start-ups and SMEs who want to streamline their invoicing and accounting. If you don't use Davilex yet or are weighing up accounting packages, we'll work out together in an intake call which approach best fits your situation and data flows.
A simple integration, for example one that writes webshop orders into Davilex as sales invoices, can be up and running relatively quickly. More extensive scenarios, with two-way synchronisation of contacts, VAT codes, general ledger and bank transactions, including error handling and monitoring, usually take longer. After an intake call in which we map out your systems and data flows, we'll give you a realistic estimate.
We work with the integration options offered by Davilex and Davilex E3-Connect, combined with the backend stack that suits you: Node.js, Python, PHP, .NET or Java. Where needed, we build a middleware layer that normalises, validates and monitors data between Davilex and your webshop, CRM or custom application. We set up authentication and data exchange securely, with logging and retry mechanisms for reliable processing.
The cost depends on the complexity of the data flows, the number of systems to connect, the desired direction and frequency of synchronisation, and the amount of custom work in the accounting logic, such as VAT codes and general ledger mapping. Ongoing management, monitoring and support also play a part. We always provide a clear quote after a no-obligation analysis of your situation.
Yes. An accounting integration processes personal data and financially sensitive data, such as customer details, invoices and bank transactions. Appfront builds to OWASP ASVS: credentials and keys in secure vaults, encrypted connections, scoped permissions and strictly separated access per integration. We document the data flows so that your record of processing activities stays complete and you can demonstrably comply with the GDPR.
Yes. Appfront regularly takes over existing integrations, even those originally set up by another party. We review the integration, the data mapping, the error handling and the logging, document the current setup and propose improvements. From that point on, we can handle changes, extensions and monitoring.
A Davilex integration suits freelancers, sole traders, start-ups and SMEs that use Davilex for their bookkeeping and invoicing, and webshops that want orders processed automatically. Typical situations include writing webshop orders into Davilex as sales invoices, synchronising contacts and invoices with a CRM, or streamlining bank transactions and VAT. Accounting firms managing multiple administrations also benefit from a reliable, automated integration.
Ready to build your Davilex integration?
Tell us which data you want to automate and which webshop, CRM or custom software Davilex needs to connect with. We're happy to think along with you about sales invoices, contacts, VAT and bank transactions. A no-obligation first conversation will quickly give you a clear picture of what's possible.