Corporation Tax

Filed with the reasoning behind it.

A CT600 return isn't just financial statement data pulled into a form. It requires genuine interpretation of the underlying records, and real technical savvy in the provisions of the Corporation Tax Acts 2009 and 2010.

RMS's team of qualified, experienced professionals review every return with genuine technical scrutiny — applying the relevant provisions and raising the right queries rather than making assumptions, ensuring full compliance with income tax law and that every genuine relief applicable to the client is correctly claimed.

What's Included

Corporation Tax Computation & Statutory Compliance

Taxable total profits accurately determined — allowable and disallowable expenditure correctly applied, reliefs claimed in full, and every CT600 prepared ready for your team's review and filing..

Financial Record Review

Financial records reviewed and summarised as the base for the CT600 — accurate figures, correctly sourced, before any computation begins.

Expenditure Review

Profit and loss account reviewed line by line — allowable and disallowable expenditure correctly applied under the Corporation Tax Acts.

Capital Allowances

Relevant capital allowances applied on fixed asset additions, with balancing charges or allowances correctly calculated at the point of disposal.

Associated Company & Marginal Relief

Associated company provisions applied accurately to determine correct marginal relief where a company's profits fall within the relevant thresholds.

Reporting & Disclosure Compliance

We track your payment and filing deadlines automatically — you'll never face a late filing surcharge or interest charge.

HMRC Portal Accuracy & Correspondence

With authorisation to communicate directly with HMRC on the client's behalf, we check portal data for accuracy against actual liability and payments — reducing the risk of unnecessary penalties or interest — and arrange Time to Pay plans directly where cash flow is under pressure.

Loss Relief & Carry-Back Amendments

Trading losses assessed for relief, including carry-back claims against prior-year profits — with the relevant CT600 amended and resubmitted where a carry-back adjusts an earlier period's liability.

Cessation of Trade Relief

Where a business ceases trading, terminal loss relief and other cessation-related provisions correctly applied to ensure the final tax position reflects all available relief..

Tools We Use

Skilled Across Leading Tax Software

Fluent in the platforms your practice already runs on, so onboarding is seamless.

Xero Tax
Taxcalc TaxCalc
IRIS IRIS
Taxfiler Taxfiler
Capium Capium
CCH CCH
FreeAgent FreeAgent

Corporation Tax Expertise, Built Into Your Practice

Book a free consultation and see how RMS's corporation tax expertise can support your practice this season.