Before you start

A valid Iqama, which underpins employment and the GOSI record
A Qiwa-registered contract showing the base and allowance split
A Saudi bank account for Wage Protection System payment
Knowledge of your own nationality's rules if it taxes worldwide income

Step-by-step

1
Confirm there is nothing to register for or file
No PAYE-style deduction on salaries and no personal income-tax return. You never register with ZATCA as an employee, because the obligation does not exist. This genuinely surprises people from countries where filing is universal.
OnlineWho: You — no action requiredn/aSAR 0
2
Read the base-versus-allowance split before signing
Packages here are typically base salary plus housing, transport and sometimes education allowances. The split matters because end-of-service gratuity is calculated on the wage as the Labor Law defines it, and because some home-country regimes treat allowances differently. Ask HR how the gratuity base is calculated, in writing.
Via employerWho: You, with HRBefore signingFree, and potentially worth a great deal
3
Let your employer register you with GOSI
For non-Saudis this is a 2% occupational-hazard contribution paid entirely by the employer, covering work injury. Nothing is deducted from your pay and no Saudi pension accrues. Saudi nationals are on a completely different scheme with real employee contributions.
Via employerWho: Employer registers; GOSI administersAt onboarding, then monthlySAR 0 to you
4
Budget 15% VAT into your real cost of living
ZATCA levies 15% standard VAT on most goods and services, tripled from 5% in July 2020. It is inside displayed prices. Residential rent is exempt and some essentials are zero-rated; everything else carries the full rate, which is what makes 'tax-free like Dubai' comparisons misleading.
OnlineWho: You, as a consumerOngoing15% embedded in prices
5
Account for the dependant levy as a lump sum
The levy on family sponsored on your Iqama is your cost rather than the employer's, and it is charged for the whole Iqama period at issue or renewal rather than monthly. For a family of four that is a substantial single payment, often landing in the same month as an annual rent instalment.
Via employerWho: You pay; the PRO processes itAt Iqama issuance and each renewalWidely quoted around SAR 400 per dependant per month, charged as a block
6
Check your own nationality's position, including rotation effects
US citizens and green-card holders file on worldwide income wherever they live, with the Foreign Earned Income Exclusion and credits usually reducing the bill, plus an FBAR over USD 10,000 in foreign accounts. If you work a rotation, your days in and out of your home country can affect residency tests there — worth advice rather than assumption.
OnlineWho: You, ideally with a cross-border adviserYour home country's deadlinesAdviser fees if used

Documents you’ll need

Iqama
Qiwa-registered contract with the allowance breakdown
Monthly payslips and an employer salary certificate
ZATCA tax residency certificate, if claiming treaty benefits at home
Home-country tax forms where applicable

Things most newcomers don’t know

The salary really is untaxed, and GOSI takes nothing from a non-Saudi's pay.

The standard worry is that social insurance will quietly consume the package as it does elsewhere. It does not: your only GOSI cost is a 2% occupational-hazard premium the employer pays, with no employee deduction and no Saudi pension accruing. Saudi colleagues contribute substantially, so a salary calculator built for nationals will badly overstate what comes off an expatriate's pay.

Source: GOSI; PwC Worldwide Tax Summaries — Saudi Arabia

The Bahrain shopping arbitrage is smaller than the VAT gap suggests.

Bahrain's VAT rate is lower than Saudi Arabia's 15%, which tempts people into buying electronics and goods across the water. What removes most of the benefit is that returning into the Kingdom is a customs event: personal allowances apply, commercial quantities are dutiable, and the causeway post inspects thoroughly. Add the toll, the insurance, the fuel and the queue, and the arithmetic on anything short of a very large purchase stops working.

Source: Saudi customs allowances; ZATCA VAT

How your package is split affects what you leave with, not just what you earn.

End-of-service gratuity under the Saudi Labor Law is calculated on the wage as the law defines it, so a package loading value into allowances rather than base salary can generate a smaller gratuity than the same headline figure structured differently. On a five-year Eastern Province contract that is a meaningful sum. Ask how the gratuity base is calculated at offer stage — the answer is fixed once you have signed.

Source: Saudi Labor Law end-of-service provisions

The 15% VAT is the line Gulf package comparisons quietly omit.

Saudi Arabia tripled VAT from 5% to 15% in July 2020 and has kept it there, against 5% in the UAE and Oman, 10% in Bahrain, and no VAT at all yet in Qatar or Kuwait. It never appears on a payslip, so an offer sold as 'tax-free, same as Dubai' understates the cost of everything here except residential rent, which is VAT-exempt. Compare modelled spending, not tax lines.

Source: ZATCA — Value Added Tax

Common mistakes to avoid

Assuming tax-free here means tax-free at home — US citizens still file, plus an FBAR over USD 10,000.
Treating Bahrain as a duty-free extension of your shopping rather than a customs border.
Signing a package without knowing how the end-of-service gratuity base is calculated.
Budgeting the dependant levy monthly when it arrives as a lump sum alongside the Iqama.
Comparing a Saudi offer to a UAE one on income tax alone while ignoring 15% against 5% VAT.

Some of this may be out of date. Spotted something inaccurate? Help us keep it right for the next newcomer.