Micro-Entity vs Small Company: Which Are You and Why Does It Matter?

UK company law defines different size categories for limited companies — and the category you fall into determines your filing requirements, accounting standards, and how much you need to disclose publicly.

The two most common categories for owner-managed businesses are micro-entity and small company. Here's how to tell which you are and what it means in practice.

The Size Thresholds

Micro-Entity Thresholds

Your company qualifies as a micro-entity if it meets at least 2 of these 3 conditions for two consecutive financial years:

Small Company Thresholds

Your company qualifies as a small company if it meets at least 2 of these 3 conditions:

Key Point

All micro-entities automatically qualify as small companies (the micro thresholds are well below the small thresholds). But not all small companies qualify as micro-entities. Think of micro-entity as a special sub-category within "small."

Filing Requirements Compared

Accounting Standards: FRS 105 vs FRS 102 Section 1A

FRS 105 (Micro-Entities)

FRS 105 is intentionally simplified:

• Historical cost only — no revaluation of assets
• No deferred tax calculations
• No fair value accounting for financial instruments
• No detailed accounting policies disclosure
• No related party disclosures
• Simplified balance sheet format with fewer line items

The philosophy is: if your company is small enough, you shouldn't need complex accounting.

FRS 102 Section 1A (Small Companies)

FRS 102 Section 1A provides more options but demands more detail:

• Revaluation permitted — you can revalue property and other assets
• Deferred tax required — must calculate and disclose timing differences
• More detailed notes — accounting policies, related parties, post-balance-sheet events
• Directors' report required — covering business review and principal activities
• More detailed balance sheet — additional line items and breakdowns

What This Means in Practice

Public Disclosure

Micro-entity: Your Companies House filing shows very little — just an abbreviated balance sheet. No profit figures, no turnover, no detailed breakdown. Your financial performance stays private.

Small company: Your P&L must be filed (though it can be abridged). More financial detail is publicly visible on Companies House, including turnover bands and profit figures.

For directors who value financial privacy, the micro-entity regime offers a significant advantage.

Preparation Complexity

Micro-entity accounts can often be prepared in a few hours by the director themselves, especially with software. The simplified format means fewer decisions and fewer disclosure requirements.

Small company accounts typically require more time and often professional assistance. The additional disclosure requirements and accounting standard complexity make DIY preparation more challenging.

Cost

The simpler your accounts, the less they cost to prepare:

• Micro-entity: Software like SimpleCompanyTax can handle everything for £25/year (trading) or £10/year (dormant)
• Small company: Accountancy fees typically range from £500-£2,000+/year depending on complexity

When You Graduate from Micro to Small

If your company grows and exceeds the micro-entity thresholds, you'll need to transition to the small company regime. This happens when you fail to meet at least 2 of the 3 micro thresholds for two consecutive years.

What Changes

When you move from micro to small:

1. You must adopt FRS 102 Section 1A instead of FRS 105
2. Your accounts need more detailed notes and disclosures
3. You'll need to file a P&L at Companies House
4. You'll need to prepare a directors' report
5. Your first-year transition may require restating prior year comparative figures

Planning for the Transition

If you're approaching the thresholds:

• Monitor your turnover, balance sheet, and employee count annually
• Remember it takes two consecutive years of exceeding thresholds before you must change
• Consider getting professional advice for the transition year
• Your iXBRL taxonomy changes from FRS 105 to FRS 102 — make sure your filing software supports both

Common Scenarios

"I'm a one-person consultancy billing £100k/year"

You're almost certainly a micro-entity. Turnover well under £632k, minimal balance sheet, 1 employee (or none if you're a director only). FRS 105 applies.

"I run an e-commerce business with £500k turnover and 3 staff"

Still a micro-entity — you meet all three thresholds. But monitor your turnover; if it exceeds £632k, you'll need to check the other thresholds.

"I have a property company with assets worth £400k"

Your balance sheet exceeds £316k. If your turnover is also over £632k, you're a small company, not a micro-entity. If turnover is under £632k and you have fewer than 10 employees, you still qualify as micro (you only need to meet 2 of 3).

"My company turned over £2 million last year"

You're a small company. Well above the micro-entity turnover threshold, but comfortably within the small company limits.

Advantages of Staying Micro

If you qualify as a micro-entity, there are good reasons to stay in this category:

1. Less public disclosure — competitors and suppliers can't see your financial details
2. Simpler preparation — fewer accounting decisions, fewer notes, faster filing
3. Lower costs — DIY filing is realistic; professional fees are lower
4. Reduced compliance risk — fewer disclosures means fewer things that can go wrong

Summary

The key differences between micro-entities and small companies are the size thresholds, the accounting standard used (FRS 105 vs FRS 102 Section 1A), and the level of public disclosure required. If you meet 2 of 3 micro thresholds (£632k turnover, £316k balance sheet, 10 employees), you benefit from simpler, cheaper, and more private filing.