The 'Invisible Workforce': Lower-Earning Self-Employed Twice as Likely to Miss Tax Deadlines

The 'Invisible Workforce': Lower-Earning Self-Employed Twice as Likely to Miss Tax Deadlines

While corporate directors and high earners navigate shifting tax codes with the help of professional advisers, the UK’s lowest-earning self-employed workers are facing a starkly different reality. Described as an "invisible workforce," these individuals are struggling against a combination of unpredictable income, a lack of professional financial support, and a system that fails to account for their financial realities.

A Freedom of Information (FoI) request submitted to HMRC by pension provider PensionBee has pulled back the curtain on this disparity, revealing that self-employed workers on the lowest incomes are significantly more likely to miss the Self-Assessment filing deadline than higher earners.

📊 The Filing Gap: Late Submissions by Income Tier

The data, which tracks Self-Assessment filings from the 2019–20 to 2023–24 tax years, shows a clear and consistent trend: individuals earning below the basic rate tax threshold file late at nearly double the rate of higher and additional rate taxpayers.

In the 2023–24 tax year, the percentage of self-employed individuals who missed the strict January 31 deadline highlights this steep income divide:

• Below Basic Rate Tax Threshold: 5.9% filed late.

• Basic Rate Taxpayers: 3.1% filed late.

• Higher Rate Taxpayers: 2.7% filed late.

• Additional Rate Taxpayers: 2.6% filed late.

Note on Long-Standing Trend: PensionBee noted that this filing gap is not a recent anomaly. The exact same pattern held true even during the 2019–20 and 2020–21 tax years, when HMRC temporarily waived late-filing penalties for any returns submitted before February 28.

🔍 The Concentration of Late Filers

In total, approximately 180,000 self-employed individuals filed their tax returns late in 2023–24. While the overall number of late filers has actually decreased in recent years, the gap between the lowest earners and higher income brackets shows almost no sign of narrowing. The concentration of those missing the deadline is overwhelmingly weighted toward those making the least money:

Income Profile of Late Self-Assessment Filers (2023-24):
Below Basic / Basic Rate Taxpayers: ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ 94%
Higher / Additional Rate Taxpayers: ▓ 6%

🌪️ Structural Hurdles and the 'Knowledge Gap'

The findings point toward deep structural inequities rather than simple administrative neglect. PensionBee identifies two primary reasons why lower-earning freelancers, sole traders, and gig workers are falling behind:

1. No Professional Support Structure

Higher-income earners routinely outsource their tax obligations to accountants or financial advisers. In contrast, lower-earning self-employed individuals almost always manage their tax affairs completely independently. Without an expert to guide them, a significant "knowledge gap" persists regarding exactly how, when, and why a tax return must be completed.

2. High Income Volatility

Lower-income self-employed workers face extreme income unpredictability. This volatility makes it uniquely difficult to plan for and meet rigid, fixed financial deadlines.

"Missing the deadline is often a symptom of a wider pressure that the system does not adequately account for. For many of these workers, unpredictable income and limited support make it genuinely harder to stay on top of financial administration."
— Lisa Picardo, Chief Business Officer at PensionBee

HMRC, on the other hand, maintains that it is actively working to bridge this gap. A spokesperson highlighted their annual national support campaign, clear online guidance on GOV.UK, and access to expert advisers, noting that these resources helped 11.5 million customers successfully file their returns on time.

⚠️ The Knock-On Effect: A Retirement Security Crisis

The administrative burden of the Self-Assessment process has dangerous long-term consequences for the invisible workforce's retirement prospects.

Unlike traditional employees who are automatically enrolled into a workplace pension plan by default, the self-employed must proactively set up and manage their own retirement funds. Separate research from PensionBee found that nearly 3 in 4 (75%) self-employed people who do not currently hold a pension are entirely unaware that personal pension contributions qualify for government tax relief.

If the lowest self-employed earners are finding the base compliance of a tax return too burdensome to manage alone, they are highly unlikely to proactively navigate the complexities of building a private pension. This places the UK's lowest-earning independent workers at severe, disproportionate risk of long-term financial insecurity.