Paid vs. Unpaid Volunteering: Key Differences in 2026

When a company or an NGO considers setting up a volunteer program, sooner or later the question arises: Should we pay the volunteers or not?

There’s no one-size-fits-all answer. The decision depends on the type of activity, the volunteers’ profiles, the available budget, and the legal and tax implications of each model. What there is, however, is enough information to make an informed decision.

This post breaks down all the relevant differences between paid and unpaid volunteering, so you can choose the model that best fits your program.

Definitions

Unpaid Volunteering

Unpaid volunteering is when the volunteer receives no financial compensation for their work. The organization may cover related expenses (transportation, meals, materials), but does not pay a salary or stipend.

It is the most widespread model in Spain and the one that best fits the classic definition set forth in Law 45/2015. It is also the simplest to manage from an administrative and tax perspective.

Paid Volunteering

Paid volunteering is a form of volunteering in which the volunteer receives financial compensation for their work, ranging from a small living stipend to more substantial amounts for specialized (skills-based) activities.

The compensation can take various forms: a fixed payment per session, a monthly stipend, a payment per project, or an hourly rate. The key legal consideration is that this compensation must not transform the relationship into an employment relationship.

Legal Differences

Legal Framework for Unpaid Volunteering

It is directly regulated by Law 45/2015, which defines volunteering as an activity performed without financial compensation. The relationship is documented through a participation agreement (not an employment contract). The organization’s obligations are: to provide accident insurance, civil liability coverage, clear information about the role, and dignified treatment.

Legal Framework for Paid Volunteering

Paid volunteering operates in a more complex area. Law 45/2015 does not explicitly address it, but it does not prohibit it either, provided certain conditions are met: the compensation cannot be comparable to a market wage, there can be no subordination or ongoing dependence, and the relationship must remain voluntary and temporary in nature.

When compensation is significant and there is ongoing subordination, the relationship may be reclassified as an employment relationship, with all its consequences (social security contributions, income tax, labor rights). That is why it is important to design the model well and document it correctly.

Protections Under Each Model

In both models, the volunteer is entitled to accident insurance and civil liability coverage. In the paid model, if the relationship is reclassified as an employment relationship, the volunteer would also have full labor rights. In the unpaid model, protections are limited to those provided for in Law 45/2015.

Taxation

Income Tax on Unpaid Volunteering

Without financial compensation, there is no income from work and no tax liability for the volunteer. Expenses covered by the organization (within reasonable limits) are also not taxable. The volunteer does not need to take any additional steps on their personal income tax return regarding this activity.

Personal Income Tax (IRPF) on Paid Volunteering

Any compensation that exceeds mere reimbursement of expenses is taxed as income from employment for personal income tax purposes. The paying organization must withhold tax and remit it to the tax authorities. The volunteer must include this amount on their annual income tax return. If the relationship does not qualify as an employment relationship, it may be reported as income from economic activities, with its own implications.

Social Security Contributions

Unpaid volunteer work does not generate Social Security contributions. Paid volunteer work involving significant compensation and a continuous structure may trigger an obligation to make contributions if it is reclassified as an employment relationship, although in principle it does not if the voluntary nature is maintained.

Administration and Documentation

Required Documentation for Each Type

For unpaid volunteering: a basic enrollment agreement, accident and civil liability insurance policy, and a time log (recommended for corporate programs).

For paid volunteering: in addition to the above, a specific agreement documenting the nature of the compensation, the type of activity, and the absence of an employment relationship; tax management of withholdings, if applicable; and potentially a service agreement if the compensation is significant.

Selection and Onboarding Process

For unpaid volunteering, the process is relatively informal: an expression-of-interest form, a brief interview, and an onboarding agreement. For paid volunteering, the process is more rigorous—similar to the hiring process—because the organization assumes greater responsibilities and commitments.

Implications for the Company

Administrative Cost

Unpaid volunteering is simpler to administer: less paperwork, no tax withholding management, and lower legal exposure. Paid volunteering adds administrative complexity: contracts, tax withholdings, payment management, and potential reclassification as an employment relationship.

Civil Liability

In both models, the company or organization must ensure civil liability coverage for volunteers during their activities. In the paid model, if an accident occurs and the relationship is reclassified as an employment relationship, the company may be exposed to additional labor claims.

Volunteer Experience

Motivation in Each Model

Unpaid volunteers are primarily motivated by intrinsic factors: connection to the cause, personal development, community, and purpose. Paid volunteers may have mixed motivations: intrinsic factors plus the need or desire to supplement their income. This is neither better nor worse, but it does influence the type of commitment and the management of the program.

Volunteer Retention

Contrary to what one might think, compensation does not guarantee higher retention. Programs with the highest retention rates are those that foster a strong connection to the cause and a sense of community—regardless of whether they pay or not. Compensation can facilitate access, but it does not replace emotional engagement.

Decision Matrix: Which One to Choose?

Use the unpaid model if: the activity is one-time or short-term, volunteers are intrinsically motivated, the budget is limited, and the activity does not require highly specialized skills.

Consider the paid model if: you need highly specialized skills that require compensation to be accessible, the activity is of significant duration and demands a high level of commitment, you want to lower the barrier to entry for volunteers without financial resources, or you’re in a sector where compensation is the norm.

Frequently Asked Questions

What is a paid volunteer?

A paid volunteer is someone who performs volunteer work (without a formal employment relationship) and receives financial compensation in return, which may be a stipend, a per-project payment, or an hourly rate. The relationship remains voluntary in nature but includes financial compensation.

Is paid volunteering legal in Spain?

Yes, with some caveats. Law 45/2015 defines volunteering as an activity without financial compensation, but in practice, there are models involving compensation that do not create an employment relationship if they are properly structured. The key factors are the absence of subordination, genuine voluntariness, and the fact that the compensation does not equate to a market wage.

Can you earn money by volunteering?

Yes, through paid volunteering. Typical rates in Spain range from €15 to €75 per hour, depending on the type of activity and specialization. For the corporate context, see: Can I earn money by volunteering?

Do you need help designing the model that best fits your company?
Maat Impact helps you structure volunteer programs with different compensation models, legal documentation, and impact tracking for ESG/CSRD.

→ Maat Impact helps you design the model you need