17Interpretation of ChapterU.K.
(1)References in this Chapter to the accounts of a UK resident company are to—
(a)the annual accounts of the company required by Part 15 of the Companies Act 2006, or
(b)if the company is not required to prepare such accounts, the accounts which it is required to keep under the law of the territory under whose laws the company is incorporated, or
(c)if the company is not required to keep accounts as mentioned in paragraph (a) or (b), those accounts of the company that most closely correspond to accounts which it would have been required to prepare if the provisions of Part 15 of the Companies Act 2006 applied to it.
(2)In this Chapter “carried-back amount” means—
(a)an amount carried back under section 37 (relief for trade losses against total profits),
(b)an amount carried back under section 389(2) of CTA 2009 (deficits of insurance companies), or
(c)an amount carried back by virtue of a claim under section 459(1)(b) of CTA 2009 (non-trading deficits from loan relationships).
(3)In this Chapter “carried-forward amount” means—
(a)an amount carried forward under section 45 (carry forward of trade loss against subsequent trade profits),
(b)an amount carried forward under section 62(5) (UK property business losses),
(c)an amount carried forward under section 63(3) (company with investment business ceasing to carry on a UK property business),
(d)an amount carried forward under 66(3) (overseas property business losses),
(e)an amount carried forward under section 91(6) (losses from miscellaneous transactions),
(f)an amount carried forward under section 76(12) or (13) of ICTA (certain expenses of insurance companies),
(g)an amount carried forward under section 436A(4) of ICTA (insurance companies: losses from gross roll-up business),
(h)an amount carried forward under section 391(2) of CTA 2009 (deficits of insurance companies),
(i)an amount carried forward under section 457(3) of CTA 2009 (non-trading deficits from loan relationships),
(j)an amount carried forward under section 753(3) of CTA 2009 (non-trading loss on intangible fixed assets),
(k)an amount carried forward under section 925(3) of CTA 2009 (patent income: relief for expenses), or
(l)an amount carried forward under section 1223 of CTA 2009 (expenses of management and other amounts).
(4)References in this Chapter to a company's functional currency are to the currency of the primary economic environment in which the company operates.
(5)References in this Chapter to the tax calculation currency of a company in an accounting period are to the currency in which profits or losses of the company arising in that period that fall to be calculated in accordance with generally accepted accounting practice for corporation tax purposes are required to be calculated by virtue of section 5(1), section 6(2), Step 1 of section 7(2), Step 1 of section 8(2) or Step 1 of section 9(2).