What It Really Costs to Hire Your First Employee: Company Cost, Gross and Net Pay Explained

Hiring your first employee is one of the most important — and most commonly miscalculated — steps in the life of a self-employed professional or small business. Many businesses budget for a new hire thinking only of the salary they’ll pay the employee, then get a nasty surprise when the first payslip arrives and, especially, when the first Social Security contribution bill lands. Understanding the difference between gross salary, net salary and company cost is the first step toward not throwing your cash flow off balance.

Gross, net and company cost: three figures that aren’t the same thing

The gross salary is the figure agreed with the employee and the one that appears on the contract: it’s the base used to calculate contributions and withholdings. The net salary is what the employee actually receives in their bank account, once their share of Social Security contributions (paid by the employee) and income tax withholding have been deducted. But the figure business owners really need to work with when budgeting is the company cost: the gross salary plus the employer’s share of Social Security contributions, plus other items such as prorated extra payments if these aren’t already included, or the cost of severance and unused holiday entitlement when the time comes.

A round-number example helps make this concrete: if you agree on a gross annual salary of €20,000, the employee won’t take home that full amount spread across twelve or fourteen payments — they’ll receive a lower figure after withholdings — while the company will need to budget considerably more than €20,000 a year to cover that hire, precisely because of the weight of employer Social Security contributions.

Employer Social Security contributions: where the budget really jumps

What tends to surprise first-time employers most is the employer’s Social Security contribution. Broadly speaking, adding together common contingencies, unemployment, FOGASA (the Wage Guarantee Fund) and vocational training, the employer’s share works out at around 31% of gross salary, though the exact percentage varies depending on the type of contract (permanent, temporary, training), the job’s contribution group, and the company’s business activity code (CNAE), which also determines the accident-at-work contribution rate. On top of this, the employee contributes their own share, roughly 6-7%, which the company withholds from their payslip and also pays over to Social Security alongside the employer’s contribution.

In other words: for every euro of gross salary, the company needs to set aside roughly another thirty cents just for Social Security — before even factoring in accounting fees, any collective-agreement insurance, occupational health and safety, or the equipment needed for the role.

Rebates that can ease the bill

It’s not all bad news. The Social Security system offers rebates and reductions on employer contributions for certain groups and situations: permanent contracts for young people, people over 45 or 52 who have been long-term unemployed, women in occupations with low female employment rates, people with disabilities, survivors of gender violence or human trafficking, or converting temporary contracts into permanent ones, among other cases. The percentages, duration and requirements for each rebate change fairly often depending on current regulations, so it’s always worth checking the specific case before hiring rather than assuming an incentive is still active, or still on the same terms as in previous years.

Modelo 111 and 190: the tax obligations that come with payroll

Hiring your first employee doesn’t just mean registering them with Social Security (through the RED System) and notifying the SEPE (the public employment service) of the contract; it also brings new tax obligations with the Spanish Tax Agency. Every payslip carries an income tax withholding, which the company pays quarterly via Modelo 111, within the first twenty calendar days of the month following each quarter. And once a year, in January, you need to file Modelo 190, the annual summary of all withholdings and payments on account made during the year, both to employees and, where applicable, to freelance professionals. A common mistake among first-time employers is assuming the income tax withholding rate is fixed: it actually depends on the salary, the employee’s personal and family circumstances, and the expected duration of the contract, and it should be recalculated if any of these change during the year.

At Zythos Business, we support self-employed professionals and small businesses through exactly this stage of growth: we work out the real cost of each hire before you commit to it, check which rebates apply to your specific case, and make sure payroll, Social Security contributions and Modelo 111 and 190 filings are all submitted on time and without surprises — so you can focus on running your business, not on the small print of Social Security.