IR35 Shake-Up Expands “Small Company” Definition, Shifting Risk to Freelancers and Reshaping SME Hiring

The UK’s off-payroll working framework is entering a significant new phase from April 2026, as reforms to IR35 redefine what constitutes a “small company” and in doing so quietly redistribute compliance burdens across the contractor economy. The changes, while positioned as a simplification for growing businesses, are expected to materially alter how SMEs engage freelance talent and how contractors price their services in an increasingly self-regulated environment.

At the centre of the reform is a substantial increase in the financial thresholds used to determine company size under IR35. Businesses with turnover up to £15 million and balance sheets up to £7.5 million will now fall within the “small company” category, provided they meet at least two of the three qualifying criteria. This adjustment is not marginal; it effectively reclassifies thousands of previously medium-sized firms, with estimates suggesting around 14,000 companies will newly qualify as small.

This reclassification has a direct regulatory consequence. Under IR35 rules, small companies are exempt from responsibility for determining whether a contractor falls inside or outside the legislation. Instead, that obligation shifts back to the contractor’s own limited company. As more businesses move into the exempt category, a growing proportion of the market will see freelancers once again responsible for assessing their own tax status and ensuring compliance.

For SMEs, the immediate impact is a reduction in administrative overhead and legal exposure. Since the 2021 private sector reforms, medium and large businesses have carried the burden of issuing Status Determination Statements and bearing liability for incorrect assessments. The 2026 changes remove that obligation for many scaling firms, allowing leadership teams to focus more on operational priorities rather than navigating complex employment status rules.

However, the shift introduces new dynamics that extend beyond compliance. With liability reverting to contractors, pricing strategies across the freelance market are likely to come under pressure. Contractors must now factor in not only tax risk but also the absence of corporate oversight when setting rates. Industry observers warn that without careful calibration, freelancers could inadvertently underprice their services, particularly when competing for work with newly exempt SMEs that are no longer incentivised to apply conservative, “inside IR35” determinations.

The reforms also reopen parts of the market that had contracted following earlier IR35 changes. Since 2021, many organisations adopted risk-averse approaches, including blanket inside-IR35 decisions or reduced contractor hiring altogether. By removing compliance responsibility from a larger pool of businesses, the 2026 framework may encourage renewed engagement with independent professionals, potentially increasing the availability of outside-IR35 opportunities.

Alongside the threshold changes, the introduction of a PAYE set-off mechanism aims to address long-standing concerns about double taxation. Under previous rules, HMRC could pursue full tax liabilities from hiring organisations even if contractors had already paid tax through their own companies. The new mechanism is designed to account for those prior payments, signalling a broader effort to rebalance fairness within the system.

Despite these adjustments, the fundamental purpose of IR35 remains unchanged: to ensure that individuals operating through intermediaries but effectively working as employees are taxed accordingly. What is changing is where responsibility sits—and how that responsibility influences behaviour across the labour market.

For SME leaders, the reforms represent both an opportunity and a strategic consideration. Reduced compliance demands may make contractor engagement more attractive, but businesses must still ensure commercial arrangements reflect genuine self-employment to avoid reputational and operational risks. For freelancers, the landscape becomes more complex, requiring sharper financial planning, clearer contractual positioning, and a more sophisticated approach to rate setting.

As the April 2026 implementation date takes effect, the recalibration of IR35 is less about deregulation and more about redistribution. The burden has not disappeared; it has simply moved. The extent to which SMEs and freelancers adapt to that shift will define the next phase of the UK’s flexible workforce economy.