The mechanics of forming a brand-new limited company are well documented. Incorporating an existing sole trader business into a new limited company is a different exercise. There is a customer base, possibly staff, a brand name, goodwill, fixed assets, working capital, ongoing contracts and historical tax positions to transition. Done well it is straightforward. Done badly it can crystallise tax liabilities, breach contracts, and confuse customers — sometimes all three.
Why incorporate an existing trade
The triggers we usually see are familiar:
- Profits have crossed the threshold where a Ltd is materially more tax-efficient.
- Liability protection becomes important — first staff hire, first big contract, first product complaint.
- The business is preparing to raise investment or sell.
- The owner wants to bring in a spouse or co-shareholder.
Step 1: Form the new company
Run a full formation as described in our incorporation guide — name, SIC codes, share structure, directors, ACSP identity verification, registered office. This is also the moment to set the share structure deliberately: even if the sole trader is the only initial shareholder, design for the next 5 years now.
Step 2: Identify what is being transferred
The sole trader's "business" is a bundle of items. Typical components:
- Goodwill — the value of the established customer base, brand, and reputation.
- Trading stock and work-in-progress.
- Plant and machinery / fixed assets.
- Intellectual property — domain names, trademarks, software.
- Receivables and payables (usually retained outside the company).
- Premises lease (if any).
- Employment contracts (if any) — covered by TUPE.
Step 3: Decide the transfer mechanism
The two principal routes:
- Sale of business and assets for cash and/or shares. The sole trader sells to the new company; the company pays in cash, shares, or both.
- Gift of assets, with the value treated as a directors loan owed by the company to the founder, drawable tax-free over time.
The choice has real tax and cash flow implications. A directors-loan-funded incorporation can give the founder several years of tax-free drawings from the loan account, but only if the underlying tax treatment is correct.
Step 4: Capital Gains Tax — and incorporation relief
Transferring a sole trader business to a Ltd is, in CGT terms, a disposal at market value. Without planning, the goodwill alone can generate a sizeable capital gain — without any cash actually changing hands.
Two main reliefs apply:
- Incorporation relief (s.162 TCGA 1992) — automatic if all assets of the business (other than cash) are transferred to the company in exchange for shares. The gain is rolled into the base cost of the shares, deferred until the shares are sold.
- Holdover relief (s.165 TCGA 1992) — election-based, broader scope, but interacts with Business Asset Disposal Relief considerations.
The right relief depends on whether the founder wants future Business Asset Disposal Relief, whether they need cash now, and whether they want a directors loan account.
Step 5: Goodwill and the post-2015 restriction
Since 2015, goodwill transferred from a related party (the sole trader) to a close company is not amortisable for Corporation Tax purposes. This means the company cannot deduct goodwill amortisation against trading profits. It does not block the transfer — but it affects the post-incorporation tax projection in a way many founders do not appreciate.
Step 6: VAT and the TOGC
If the sole trader is VAT registered, the transfer is normally structured as a Transfer of a Going Concern (TOGC) — outside the scope of VAT, subject to conditions. Get this wrong and you trigger a VAT bill on the transfer of assets.
Step 7: HMRC notifications
- Final self-assessment for the sole trader covering the period to the transfer date.
- Corporation Tax registration for the new company.
- VAT — either deregister the sole trader and re-register the company, or transfer the existing VAT number (form VAT68) if the parties agree.
- PAYE — register the company as employer; transfer employees under TUPE.
Step 8: Customers, suppliers and contracts
Contracts in the sole trader's name do not automatically transfer. Either novate them or assign with consent. Notify customers in writing of the new entity, new bank details and any change to invoicing. This is also the right moment to refresh standard terms, since you have a clean break.
Step 9: The clean year-end
Plan the transfer date as close as possible to a natural break — month-end, quarter-end, ideally year-end. This keeps the sole trader period and the company period cleanly separable, simplifying the accounts and tax returns on both sides.
How PushDigits handles it
We run incorporations of existing sole trader businesses as a structured project combining formation, transfer documentation, CGT planning, TOGC and HMRC notifications. UK formations, tax planning and annual accounts are co-ordinated from the same engagement. Book a call and we will model the post-incorporation tax position before you commit.