Both freelancers and small business managers eventually get fed up with the Endless Excel spreadsheets, silly VAT mistakes, and last-minute quarterly closingsThe good news is that today you have access to a host of accounting and invoicing programs designed precisely to avoid that: minimizing human error, automating tedious tasks, and giving you a clear view of how your business is performing without driving you crazy.
Good accounting software helps you to Centralize invoices, banks, taxes, reports and documentation in one place, comply with regulations (VerifactuElectronic invoicing (e.g., SII, TicketBAI, etc.) allows you to work closely with your advisor without constantly sending PDFs. But with so many options available, it's easy to feel lost. Here, we've compiled and reorganized information on the best programs recommended by experts, consultancies, and manufacturers.
What is accounting software and why should you be interested in using it?
An accounting program is, basically, a digital tool that records and automates all economic transactions of your business: income, expenses, taxes, depreciation, balance sheets, etc. Some focus on the most basic invoicing and others are comprehensive solutions that also cover inventory, projects, human resources or CRM.
Furthermore, with the rise of AI and mandatory digitization (Create and Grow Law, Anti-Fraud Law, future mandatory electronic invoicing and systems like Verifactu), it is becoming increasingly important abandon manual accounting altogetherIt is necessary to switch to solutions that record each transaction with traceability and legal security.
What it should include:
- At the very least, it should allow you to carry the general accounting and, in many cases, also analytical or budgetary accounting: entries, opening and closing of fiscal years, balance sheets, profit and loss statements, cash flow statements, etc.
- In the billing section, good software has to cover the Issuance of invoices, quotes, pro forma invoices, tickets and recurring invoiceswith correct numbering, customizable templates, and email delivery options. Many include POS systems, SEPA remittance management, card payments, and even integrations with Shopify, Stripe, or other payment systems.
- Some kind of tax management and regulatory compliance: standard models (303, 390, 130, 100, 115, 180, 111, 190, 347, 349…), automatic calculation of fees, generation of VAT and IRPF books, quarterly IRPF control, support for electronic invoicing and adaptation to Verifactu or TicketBAI in the territories where it applies.
- Recommended extras: Automatic bank reconciliation, multi-bank connection, generation of comparative graphical reportsMulti-company and multi-user support, inventory control, integration with CRM or ERP, cloud storage and shared access with management companies.

Best general accounting software for SMEs and freelancers
Among the programs focused primarily on accounting (although many include invoicing, inventory, or other areas), there are several well-established solutions in Spain that stand out for their maturity and for being designed for small and medium-sized enterprises, as well as consulting firms. These are the most popular:
Flesip
Flesip has positioned itself as one of the Powerful cloud-based accounting software for SMEs and freelancersIts main strength is the automatic accounting transfer: it allows you to transfer financial data to your accounting system without having to manually enter information again.
The platform automates the creation of accounting entries, import and export of data, and reconciliation of transactionsThis significantly reduces the time spent on administration. Furthermore, it offers a specific function for advisors, allowing the accounting firm to access all accounting data in real time without exchanging PDFs or endless emails.
Flesip focuses on a very simple interface, integrations with the tools most used by SMEs and freelancers in their daily work, and a user-friendly approach. secure centralized financial management from the cloudIt offers a 14-day free trial and can be financed through grants such as the Digital Kit, as they act as digitization agents.
A3ERP and a3innuva
Wolters Kluwer, with more than 35 years developing accounting and management softwareIt is a benchmark in the Spanish market. Its catalog includes the following highlights: A3ERP (more geared towards local installation and ERP environments) and a3innuva (their cloud-based accounting solution), widely used by both companies and consultancies.
a3innuva is especially interesting if you need Access accounting from anywhereIt allows for intelligent invoice entry, generation of VAT and personal income tax ledgers, depreciation calculations, fixed asset records, exportable management reports, and comparative graphs of income and expense trends over time.
These solutions always work with real-time data, continuously updated to reflect any regulatory changes and a strong focus on taxation (model generation, integration with the Tax Agency, and document management). In return, they are very powerful tools whose adoption is usually linked to working together with an accounting firm or an internal accounting department.
Gespyme
Gespyme is especially indicated for Small businesses with buying and selling activity and a need to control inventoriesIt combines accounting, invoicing, business management, and inventory into a single cloud-hosted solution.
It includes a centralized customer and supplier database, and the possibility of manage business activity, design balance sheets and control stock without manual reviewsIt is multi-user and allows simultaneous access from anywhere with an internet connection.
It offers a free demo and, if it suits your needs, you can subscribe to different paid plans depending on your usage. Ideal for product-oriented SMEs that want a solid inventory control and reasonably complete accountingIt's an option to consider.
Altai
Altai is one of Payment accounting programs most recognized for their ease of useIt is marketed as such an intuitive tool that someone without extensive accounting knowledge can use it, and in practice its interface largely lives up to that promise.
Its strong point is the adaptability through sectoral plansThere are specific versions for construction companies, real estate agencies, cooperatives, non-profit organizations, SMEs in general, and customized plans. This allows for modules and templates designed for the realities of each type of business.
Manage invoices, amortizations, bank synchronization for Automatic reconciliation, tax settlements, customized reports and budgetsA very convenient feature is the automatic creation of entries from scanned invoices, relying on third-party solutions, and the import of data using ASCII files to avoid incompatibilities with other management software.
visionwin
visionwin He is a veteran among the Free solutions (freemium model) for accounting and invoicingThe base version is free to download and use, while support and updates are paid separately. It's a local application, so it doesn't allow cloud access, which is something to consider if you work remotely.
It includes a pre-configured chart of accounts for a quick start, automatic journal entries, Tax filing, analytical and budgetary accounting, and reports with very useful comparative chartsAnother interesting feature is the ability to associate scanned documents with each seat, keeping the documentation perfectly linked.
The paid professional version adds options such as multi-user local network, technical support and continuous updates, with different rates depending on whether it is used locally or in the cloud through their hosted solutions.
Accounting.net
Accounting.net has gained fame as Simple and straightforward software for freelancers and small businesses They don't want to get bogged down with modular systems. Their main strength is simplicity: a user-friendly interface, a customizable workspace, and clear functions.
Allows you to work with accounting entries, bank reconciliation, amortizations, foreign currency records and other standard accounting operations. If you're coming from another program, it supports data import via CSV files, Excel, or specific integrations with certain applications.
It operates under local installation, with single-payment licenseIf you need support or updates later, you'll have to pay again, but in return you can operate without monthly fees, which is great for businesses with tight budgets.
Keme (open source)
Keme It is the option for those who prefer Free and cross-platform software (Windows and Linux)It's free in its basic version and has a user community that can answer questions, although they also offer paid professional support for those who need it.
It is multi-user and multi-company, allowing you to carry out Official books, opening and closing of fiscal years, amortizations and control of due datesIts philosophy is heavily focused on simplicity and transparency. This makes it an ideal alternative if you want technological independence and to avoid proprietary licenses.

Best billing and management software for freelancers and SMEs
In addition to the basic accounting, many self-employed individuals especially need Billing software that complies with regulations, integrates banks, generates taxes, and, if possible, adds customer or project managementThis is where solutions like Holded, Contasimple, Cuéntica, Billin or E-autónomos come into play.
held
held it has become one of the Most popular all-in-one software among SMEs and freelancers in SpainIt was born with the idea of ​​centralizing billing, accounting, CRM, projects, inventory and, in many cases, also the human resources aspect.
Its design is highly usability-oriented: a modern interface, intuitive flows, and a gentle learning curve. It allows Issue invoices, monitor collections, manage customers and suppliers, keep inventory, track projects, and visualize the health of the business with dashboards and reports..
‎ specific plan for self-employed workers (affordable pricing, with limits on annual invoices, document scanning, and bank connections) and various plans for businesses, from basic to advanced and premium levels, with more users, extra modules, and integrations. It typically offers a trial period and introductory promotions.
It is one of the most recommended solutions when looking for a A unique ecosystem for administration, billing, and accounting, with the possibility of integrating external applications and working hand in hand with the consulting firm.
simple account
simple account is focused on Billing, simple accounting management and tax aspects For freelancers and micro-enterprises. Its philosophy is to make tax management accessible to non-expert users, generating forms such as 303, 390, 130, 100, 115, 180, 111, 190, 347 and 349.
It includes sales, purchase and expense ledgers, basic stock management, recording working hours, profit and loss reports and SEPA remittance processingIt also accepts card payments via integrated POS terminal, which is useful for businesses with direct sales.
Among its limitations, the OCR reader is a basic tool and lacks human validation.Bank synchronization is not fully automatic, and it lacks invoice sending from the platform itself and advanced stock management. It offers a basic free plan and two paid plans (Professional and Ultimate) with more features and capabilities.
billin
billin It is a program focused on the Issuing and sending invoices in a simple wayIt is very focused on being quick to use and offering good customer support to resolve operational queries.
It allows you to automatically fill in invoice fields based on customer data and product catalog information. It also includes... Mobile app for invoicing from anywhere, Shopify integration to convert orders into invoices, and integration with accounting firms for tax filing..
It supports FACe electronic invoices for the Public Administration and TicketBAI, and offers expense categorization and internal support chat. On the downside, its expense reader can be unreliable, and it doesn't allow creating expense invoices without an attachment. It lacks delivery notes, inventory control, and self-filling tax forms..
It offers three plans: a basic plan with few clients and products, an intermediate Pro plan, and an Unlimited plan with recurring invoices, plus smart readings and integration with Shopify.
E-self-employed
E-self-employed It is a platform geared towards Entrepreneurs and self-employed workers who want to have advice and management tools in the same placeThe idea is that you can create budgets, turn them into invoices, see real-time tax forecasts, and receive regular reviews from professionals.
All their plans include the procedures for registering as self-employedThey offer a limited free trial and include telephone support. The software allows for recurring invoices, accounting ledger updates, unlimited storage, and a clear view of your tax obligations as you record transactions.
Fees are structured according to the type of service (basic tax-adjusted, tax-exempt, freelance with a variable fee linked to billing). The monthly cost is usually in the mid-range of the market. It's an interesting option if You don't want to separate the program and the management, and you prefer a turnkey service..

Complementary software: billing, management, marketing and productivity
Beyond pure accounting, a healthy business is usually based on Other key tools: specific billing, CRM, email, cloud storage, marketing, design, or task managementThey are not accounting programs, but they directly influence the organization and how data flows into accounting.
Among the most used billing programs in Spain, in addition to those already mentioned, the following stand out: Ayuda T Pymes (Compliant with Verifactu and electronic invoicing, automatically generates tax forms and synchronizes with banks), Sage One or Factusol, all with trial versions for freelancers and SMEs.
In general management, tools such as Microsoft To Do, Trello, Asana, Basecamp, Evernote or Momentum They help organize tasks, projects, publication schedules, or coordination between teams. For email, Gmail, Outlook, Thunderbird or Mailbird They allow you to centralize accounts, automate responses, and connect with dozens of applications.
In marketing and social media, services such as Mailrelay, Mailchimp, Conectif, Hootsuite, Meta Business Manager, Inshot, Pixlr or Feedly They facilitate email marketing, publication planning, and results analysis. And for design and archiving, Canva, Visme, Inkscape, Freepik, Pngtree, Dropbox or WeTransfer They are almost indispensable for the visual aspect of your brand.
This entire ecosystem makes sense when it is integrated, directly or indirectly, with your accounting software: Invoices that are entered into the general ledger, tickets that are digitized and recorded, reports that inform financial decisions and communications that are ordered to justify expenses or projects.
Human resources tools and their impact on accounting
If your SME has employees, human resources management is completely linked to the payroll accounting, social security, vacations, sick leave and timekeepingThis is where specific solutions come into play, which are then coordinated with your accounting software.
Factorial, for example, is a very comprehensive HR software which centralizes time tracking, vacations, absences, payroll signing, and employment documentation. Sesame HR and TimeTac focus more on recording working hours and basic employee management, while Clockify offers time tracking designed for freelancers and small teams, ideal if you bill by the hour.
All these systems end up generating data that impacts your profit and loss account, in tax models and in the calculation of personnel costsTherefore, it is essential that they can be exported or integrated with accounting, either through standard files or APIs.
What accounting processes should a self-employed person master?
Even using a great program, as a freelancer you need to be clear about the minimum accounting and tax requirements that you must comply withThe software helps you, but the ultimate responsibility remains yours.
In your daily life, you must maintain a orderly record of all your financial transactionsIncome, expenses, relevant financial transactions, investment in fixed assets, etc. This is reflected in income and expense ledgers (or sales and purchases) and in a detailed invoice.
It is also essential to control the VAT accounting (charged and incurred) and quarterly personal income tax payment using Form 130 (or specific forms depending on your tax regime). At the end of the year, it's time to close the books, file your income tax return, and, if applicable, other annual summaries.
Also, don't forget the monthly self-employed contributionwhich is a recurring expense that must be included in your figures, and other insurance or financial commitments that impact your cash flow.
How to choose the right accounting software for your needs
Choosing software isn't about trends, it's about To fit it to the size, complexity and concrete reality of your businessA freelancer who issues ten invoices a month does not have the same needs as an SME with several employees, different bank accounts, and business trips.
Key factors to consider include ease of use, learning curve, and program languageA user-friendly interface can make the difference between using it daily or leaving it gathering dust in a virtual drawer. You should also consider whether it fits your processes (services, product sales, projects, subscriptions, etc.).
Another point is the integration with other systemsBanking, CRM, online store, expense tools, HR, etc. Good accounting software should act as a hub that communicates with everything else. Ask about APIs, export formats, compatibility with your accounting firm, and existing connections.
Don't forget the scalability and the pricing modelPerhaps you're currently self-employed with no employees, but in a couple of years you might need multi-user, multi-company, or more advanced control. Check if the provider offers plans that grow with you without requiring you to migrate tools constantly.
Finally, examine the security of the informationTechnical support, update frequency, and regulatory compliance are all important factors. And, whenever possible, take advantage of free trials or demos to test the program with real data before committing.
Ultimately, the best accounting software for SMEs and freelancers is the one that allows you to Leave behind the chaos of paperwork and spreadsheets, automate much of the bureaucracy, comply with the tax authorities without surprises, and understand at a glance how your business is doing.Whatever the solution, the important thing is that it fits your workflow, integrates seamlessly into your digital ecosystem, and saves you time on administration. All so you can focus on what really matters: growing your project.