Gibraltar Income Tax Calculator 2025/26

How Gibraltar Income Tax Works

Gibraltar runs a distinctive dual income tax system. Unlike most jurisdictions, every resident is assessed under two parallel systems — the Allowance-Based System (ABS) and the Gross Income Based System (GIBS) — and you pay tax under whichever produces the lower bill. There is no need to formally elect a system; the Income Tax Office runs both calculations and applies the cheaper result.

The two systems take very different approaches. The ABS first deducts your personal allowance and other reliefs to reach a taxable income, then charges progressive rates on what remains. The GIBS ignores allowances entirely and charges rates directly on your gross income. As a rule of thumb, people with substantial allowances and deductions tend to do better under ABS, while higher earners with few deductions often pay less under GIBS.

Step-by-Step: Calculating Tax Under Both Systems

To find your salary after tax in Gibraltar, work through both systems and compare:

1. Find your gross annual income — total salary, bonuses and other assessable earnings before any deductions.
2. ABS calculation: subtract your personal allowance (around £11,450 for 2025/26) and any eligible allowances and deductions to get your taxable income, then apply the ABS bands of 16%, 19%, 25%, 28% and 25%.
3. GIBS calculation: take your full gross income with no deductions and apply the GIBS bands — 16% on the first £17,000, 19% on the next £8,000, 25% on the next £15,000, 28% on the next £65,000 and 25% on the balance.
4. Compare the two tax figures and take the lower of the two.
5. Subtract the lower tax from your gross income to get your take-home pay, then check it against the PAYE already deducted during the year.

ABS Rates, Allowances and GIBS Thresholds

Allowance-Based System (ABS) bands — applied after allowances

• 16% — first £4,000 of taxable income
• 19% — next £8,000 (£4,001–£12,000)
• 25% — next £15,000 (£12,001–£27,000)
• 28% — next £65,000 (£27,001–£92,000)
• 25% — balance above £92,000

Under ABS a personal allowance of roughly £11,450 applies for 2025/26, with tapering relief that lifts the tax-free threshold for lower earners. The allowance is deducted (along with other reliefs) before the bands are applied.

Gross Income Based System (GIBS) bands — no allowances

• 16% — first £17,000 of gross income
• 19% — next £8,000 (£17,001–£25,000)
• 25% — next £15,000 (£25,001–£40,000)
• 28% — next £65,000 (£40,001–£105,000)
• 25% — balance above £105,000

GIBS gives no personal allowance and no deductions. Lower incomes (broadly £25,000 and below) are taxed on a separate set of reduced rates. Figures are modelled for 2025/26 — always confirm the current bands with the Gibraltar Income Tax Office at gibraltar.gov.gi.

How to Choose Between ABS and GIBS

You don't actively choose — the Income Tax Office automatically assesses you under whichever system is cheaper. But understanding the drivers helps you plan. The key question is the value of your allowances and deductions:

• Choose-friendly to ABS: large mortgage interest, pension and life assurance contributions, private medical insurance, spouse and child allowances — all of which reduce taxable income.
• Choose-friendly to GIBS: higher earners with few deductions, who benefit from the wider 16% starting band on gross income.

Common ABS allowances and deductions include the personal allowance, the spouse and one-parent-family allowances, child and dependent-relative allowances, mortgage interest relief, approved pension and insurance contributions, and certain home-purchase and improvement allowances. Because these only count under ABS, the more you can claim, the more likely ABS beats GIBS.

Marginal Rate vs Effective Rate

Your marginal rate is the percentage charged on your next pound of income — for instance, 28% if your earnings reach the 28% band under the system that applies to you. It tells you how much of a pay rise or bonus you keep.

Your effective rate is your total income tax divided by your gross income. It is always lower than your marginal rate because your earlier income is taxed in the lower 16% and 19% bands, and (under ABS) part of your income is sheltered by your personal allowance. When comparing job offers or planning contributions, the effective rate shows your real overall tax burden, while the marginal rate shows the cost of earning more.

Gibraltar Tax Specifics

PAYE and the tax year

Most employees pay through PAYE (Pay As You Earn): your employer deducts income tax and social insurance from each pay packet and remits it to the Income Tax Office. The Gibraltar tax year runs from 1 July to 30 June, so 2025/26 covers 1 July 2025 to 30 June 2026 — different from the UK's April-to-April year.

Category 2 and HEPSS status

Gibraltar attracts internationally mobile individuals with two special regimes. Category 2 (Cat 2) status caps the assessable income of qualifying high-net-worth residents, with a minimum and maximum annual tax. HEPSS (High Executive Possessing Specialist Skills) status caps the income on which qualifying senior executives are taxed. Both require prior approval and have strict eligibility conditions, including residency and accommodation requirements.

Filing and returns

After the tax year ends, your liability is reconciled against the PAYE deducted, which may produce a refund or a balance to pay. Individuals with additional or non-PAYE income may need to file a return with the Income Tax Office. For self-assessment deadlines, special status applications and the latest allowance figures, consult gibraltar.gov.gi or a qualified tax adviser.

Frequently Asked Questions