Umbrella vs Limited Company for Aberdeen Oil and Gas Contractors

Aberdeen oil and gas contractors working on UK Continental Shelf operations typically choose between an umbrella company and a personal service company (limited company). The umbrella route is simpler administratively but takes home less. The limited company route offers more flexibility and potentially higher take-home outside IR35, but requires compliance management and is subject to the off-payroll rules on North Sea contracts.

How umbrella companies work

An umbrella company employs the contractor as a worker. It receives the contract rate from the agency or end client, deducts employer NI (15% above £5,000), processes PAYE for income tax and employee NI, and pays the contractor a net salary. The contractor is an employee of the umbrella, receives statutory employment rights, and has no company administration to manage. Expenses are limited to those genuinely incurred in performing the work — travel to a regular work site is not deductible under the supervision, direction, and control test that typically applies to umbrella workers.

How a limited company works

A limited company (personal service company) contracts directly with the agency or end client. If outside IR35, the contractor takes a salary and dividends and pays corporation tax on profits. This creates scope for tax-efficient extraction. If inside IR35, the deemed employment rules apply and the company receives a net amount after PAYE deductions, largely eliminating the tax advantage.

IR35 and North Sea contracts

Oil and gas end clients on the UKCS are medium or large businesses and therefore determine IR35 status under the Chapter 10 off-payroll rules. Most UKCS roles — particularly drilling, operations, and field engineering — are considered inside IR35 because the contractor works under supervision and direction, uses client equipment, and lacks financial risk in the way an independent business would. Where inside IR35 is the determined status, the limited company advantage is largely lost.

Take-home comparison

For a contractor inside IR35 on a £500/day rate working 200 days, the gross income is £100,000. Through an umbrella, the take-home after employer NI, employee NI, PAYE, and Scottish income tax is typically around £58,000–£62,000 depending on deductible expenses. Through a PSC inside IR35 the take-home is similar but with the addition of company running costs reducing the net further. A PSC is only clearly superior outside IR35.

Which is right for Aberdeen oil contractors?

• Umbrella: simpler, no company admin, suitable for contractors who are or expect to be inside IR35.

• Limited company: better outside IR35, provides more planning flexibility, requires ongoing accountancy support.

• Review annually — status can change between contracts or client determinations.

Use our IR35 calculator to compare umbrella and limited company take-home. Countify's oil and gas contractor accounting service in Aberdeen provides specialist advice for UKCS contractors.