Startup Accounts and Corporation Tax for UK Founders

Corporation tax, accounts and compliance for UK startups.

Statutory compliance is the foundation that the R&D, SEIS/EIS and EMI work rests on. For a startup, it is also not generic: the first accounts after a raise, pre-profit losses that need banking before they can be used, founder extraction in a company with little or no profit, payroll scaling alongside an EMI pool, and VAT registration as ARR hits <a href="https://www.gov.uk/register-for-vat">£90,000</a> all have startup-specific dimensions that generic compliance practice misses. <a href="https://www.gov.uk/corporation-tax-rates">Corporation tax</a> is 19% on profits up to £50,000 and 25% on profits of £250,000 or more, with marginal relief between, and the thresholds divide by the number of associated companies. For pre-profit companies, <a href="https://www.gov.uk/guidance/corporation-tax-calculating-and-claiming-a-loss">trading losses carry forward</a> and must be captured in a filed return to be banked. <a href="https://www.gov.uk/hmrc-internal-manuals/business-income-manual/bim46351">Pre-trading expenditure</a> incurred within seven years before trade starts is allowable. For founder extraction, <a href="https://www.gov.uk/tax-on-dividends">dividend rates in 2026/27 are 10.75%, 35.75% and 39.35%</a> with a £500 allowance. Employer NIC is <a href="https://www.gov.uk/national-insurance-rates-letters">15% above a £5,000 secondary threshold</a>; the Employment Allowance is up to £10,500, but a solo-director company whose only employee paid above the threshold is a director is not eligible. Generic corporation tax mechanics, dividend-vs-salary calculators, and VAT explainers are linked to the generalist site rather than repeated here.

The challenges clients face.

First post-raise accounts without startup-aware compliance

The first accounts after a fundraise involve decisions a generic practice may not flag: the correct treatment of the raise in the balance sheet, the associated-company limit division if the founder group has more than one entity (reducing the <a href="https://www.gov.uk/corporation-tax-rates">£50,000 and £250,000 thresholds</a> proportionally), and the banking of early-year losses in a filed <a href="https://www.gov.uk/guidance/corporation-tax-calculating-and-claiming-a-loss">Corporation Tax return</a> so they carry forward against future profits.

Solo-director company assuming it can claim the Employment Allowance

The <a href="https://www.gov.uk/claim-employment-allowance">Employment Allowance of up to £10,500</a> is not available to a company whose only employee paid above the <a href="https://www.gov.uk/national-insurance-rates-letters">£5,000 secondary threshold</a> is a director. Many solo-founder companies fall into this exclusion. The employer NIC at 15% on the director's salary above £5,000 is a real cost that cannot be offset by the Employment Allowance, which changes the optimal founder salary calculation.

Payroll scaling without connecting it to the EMI pool and ERS deadlines

As the team grows, payroll and the <a href="/services/emi-scheme-setup">EMI option pool</a> interact: ERS annual returns covering both payroll-settled equity events and EMI grants must be filed by <a href="https://www.gov.uk/guidance/submit-your-employment-related-securities-ers-return">6 July</a>. Running payroll without awareness of the ERS return obligation, or without tracking whether new hires are being brought in under EMI grants that need notification, creates compliance gaps that accumulate silently.

Scaling ARR past the VAT threshold without a plan

VAT registration is mandatory once rolling 12-month UK taxable turnover reaches <a href="https://www.gov.uk/register-for-vat">£90,000</a>. For SaaS companies, the <a href="/blog/saas-and-tech-finance/vat-for-saas-place-of-supply">B2B reverse charge and place-of-supply rules</a> mean overseas revenue may not count toward the threshold; the position depends on the specific supplies and should be verified against HMRC's Notice 741A. Missing the registration point and failing to charge VAT retrospectively is a material liability.

How we help.

First and ongoing accounts and CT returns with startup-lifecycle awareness

We prepare annual statutory accounts to FRS 102 or FRS 105, compute the <a href="https://www.gov.uk/corporation-tax-rates">Corporation Tax liability</a> with all available reliefs, and file the CT600. For pre-profit companies, we bank <a href="https://www.gov.uk/guidance/corporation-tax-calculating-and-claiming-a-loss">trading losses</a> in the filed return and identify any <a href="https://www.gov.uk/hmrc-internal-manuals/business-income-manual/bim46351">pre-trading expenditure</a> allowable under the seven-year window. We apply the associated-company threshold division correctly where the founder group has multiple entities.

Founder extraction and payroll done correctly for the startup stage

We run payroll and advise on founder extraction scoped to a pre-revenue or low-profit company: employer NIC at <a href="https://www.gov.uk/national-insurance-rates-letters">15% above the £5,000 secondary threshold</a>, the Employment Allowance solo-director exclusion, and <a href="https://www.gov.uk/tax-on-dividends">2026/27 dividend rates</a> of 10.75%, 35.75% and 39.35% with a £500 allowance. Scottish income tax has different bands, which affects the optimal founder salary split for Scottish-resident founders. We connect payroll to the <a href="/services/emi-scheme-setup">EMI pool</a> and flag the <a href="https://www.gov.uk/guidance/submit-your-employment-related-securities-ers-return">6 July ERS return</a> obligation alongside the payroll calendar. For a generic dividend-vs-salary comparison, we route to the <a href="/calculators/founder-dividend-vs-salary-calculator">founder calculator</a>.

VAT registration timing and SaaS place-of-supply management

We monitor the <a href="https://www.gov.uk/register-for-vat">£90,000 registration threshold</a> as ARR scales and plan the registration timing. For SaaS supplies, we assess the B2B reverse-charge and <a href="/blog/saas-and-tech-finance/vat-for-saas-place-of-supply">place-of-supply position</a> against the specific supplies, verifying against Notice 741A before advising on whether overseas B2B revenue counts toward the threshold. IR35 and off-payroll working is a boundary note for this site: for contractor-side depth, the <a href="https://www.gov.uk/guidance/understanding-off-payroll-working-ir35">Contractor Tax Accountants sibling site</a> covers it in full.

Common questions

Do we still file a corporation tax return if the company is pre-profit?

Yes. A Corporation Tax return must be filed even where the company has made a loss. Filing the return is how <a href="https://www.gov.uk/guidance/corporation-tax-calculating-and-claiming-a-loss">trading losses are put on record with HMRC</a> so they can be carried forward against future profits. A company that does not file a loss-year return risks losing or creating uncertainty about the available loss pool, which matters materially once the company becomes profitable.

Can our solo-director company claim the Employment Allowance?

No, if the only employee paid above the <a href="https://www.gov.uk/national-insurance-rates-letters">£5,000 secondary threshold</a> is a director. The <a href="https://www.gov.uk/claim-employment-allowance">Employment Allowance</a> is excluded for companies in that position. This changes the optimal founder salary calculation: employer NIC at 15% on any salary above £5,000 is a real cost with no allowance to offset it. The calculation for a solo-director company therefore differs from the generic salary-vs-dividend comparison.

When does our startup have to register for VAT?

VAT registration is mandatory once rolling 12-month UK taxable turnover reaches <a href="https://www.gov.uk/register-for-vat">£90,000</a>, or when there is a 30-day forward expectation that it will. For SaaS companies, overseas B2B supplies may not count toward the threshold under the B2B reverse-charge and <a href="/blog/saas-and-tech-finance/vat-for-saas-place-of-supply">place-of-supply rules</a>. The position depends on the specific supplies and should be verified against Notice 741A, not assumed. Missing the registration point and failing to account for VAT retrospectively is a material liability.

Can we claim costs incurred before we started trading?

Yes, if they were incurred within seven years before the trade started and would have been allowable had the trade already begun. <a href="https://www.gov.uk/hmrc-internal-manuals/business-income-manual/bim46351">HMRC's guidance</a> treats pre-trading expenditure as incurred on the first day of trading in those circumstances. This covers costs that many pre-incorporation or pre-revenue founders assume are lost: development costs, software subscriptions, professional fees, and similar expenditure within the seven-year window.