Glossary

Plain-English finance glossary

Short definitions for the words that show up in year-end, cash and tax. Linked to fuller guides where we have them.

Last updated: 11 July 2026

Plain-English definitions for the finance words UK small business owners meet most often. Short entries, no homework. Where we have a fuller guide or product page, we link it.

This glossary is general information. Rules and thresholds change. Prefer current GOV.UK guidance and a qualified accountant for your situation.

13-week cash flow

A short-range forecast of money in and out over the next thirteen weeks, used to spot a trough early.

Read 13-week forecasting explained Get the UK template guide Tax in the forecast
Accrual

Recognising income or costs in the period they relate to, even if the cash has not moved yet. Common at year-end for bills and invoices still open.

See Schedules Read the year-end checklist
Aged creditors (AP ageing)

A list of what you owe suppliers, split by how overdue each bill is (for example current, 30, 60, 90-plus days).

See Vendors
Aged debtors (AR ageing)

A list of who owes you, split by how overdue each invoice is. The starting point for a chase queue.

See Customers
Balance sheet

A snapshot of what the business owns and owes on a given date: assets, liabilities and equity.

See Financials
Bank reconciliation

Matching the bank statement to the books for a period, so every difference is explained or queued for review.

See Reconciliations See Banks
Capital allowances

Tax relief for qualifying business assets (for example vans and kit). Treatment is a tax decision: Alfred can organise the register, your accountant confirms the claim.

See Assets See Tax prep
Cash flow forecast

A forward look at money in and out. A 13-week grid is common for small firms because it shows the next trough, not only a monthly average.

Get the UK template guide Include tax
Cash runway

How long your cash would last at the current burn rate if nothing else changed. Useful, but incomplete without a 13-week view of timing.

Read when will my business run out of cash
Confirmation statement

The annual filing that confirms company details with Companies House. It is not your accounts.

Read the confirmation statement guide
Corporation tax

Tax on a UK company's taxable profits for an accounting period. The CT600 is the return that reports it to HMRC.

Read the CT600 guide Payment deadline Tax in the cash forecast
Creditor days

How many days, on average, you take to pay suppliers. Useful next to debtor days when you are reading cash timing.

See Cashwatch™
CT600

The corporation tax return a UK limited company files with HMRC for an accounting period.

Read the CT600 guide
Debtor days

How many days, on average, customers take to pay you. Lower is usually healthier for cash.

Read how to reduce debtor days
Depreciation

Spreading the cost of a fixed asset over its useful life in the accounts. Drafts often land in Schedules for review before posting.

See Schedules See Assets
Director's loan account

The running balance of money a director has taken from or put into the company, outside salary and dividends.

Read the director's loan guide
Dividend

A distribution of company profits to shareholders. It is not a salary, and it needs enough distributable profits.

Related: director's loan guide
Fixed assets

Long-term items the business owns and uses (vans, kit, fit-out), shown at cost less depreciation as net book value.

See Assets See Schedules
FRS 102

The main UK GAAP standard for many small and medium companies that are not filing as micro-entities under FRS 105.

Compare micro-entity and small company
FRS 105

The financial reporting standard often used for micro-entity accounts in the UK.

Read micro-entity versus small company
iXBRL

A tagged digital format used for many UK company accounts and tax computations filed online.

Read the year-end checklist
Making Tax Digital (MTD)

HMRC rules that require digital records and compatible software for certain tax returns, including VAT and (from 2026) Income Tax for many sole traders and landlords.

Read MTD for Income Tax 2026
Management accounts

Internal P&L, balance sheet and cash views used to run the business during the year, not the statutory pack filed at year-end.

See Financials See Pulse™
Micro-entity

A company that meets size tests allowing simpler accounts under UK rules. Thresholds changed from April 2025.

Compare micro-entity and small company
National Insurance (NIC)

Contributions paid by employees and employers on earnings. Employer NIC is a cash cost that should sit in a tax-aware cash forecast.

Read PAYE payment deadlines Tax in the cash forecast Related: PAYE
Net book value (NBV)

What a fixed asset is carried at in the books: cost less accumulated depreciation (and any impairment).

See Assets Related: fixed assets
PAYE

Pay As You Earn: how employers deduct Income Tax and National Insurance from wages and pay them to HMRC on a schedule.

Read PAYE payment deadlines See Cashwatch™ (tax-aware cash) Tax in the cash forecast
Prepayment

A cost paid now that relates to a later period (for example annual insurance). Year-end often moves the unused part onto the balance sheet.

See Schedules Read the year-end checklist
Profit and loss (P&L)

The statement of income and costs over a period, ending in profit or loss. Also called the income statement.

See Financials
Provision

An amount set aside in the accounts for a likely future cost where timing or amount is uncertain. Needs professional judgement before it posts.

See Govern See Proposals
Reconciliation

Checking that two records of the same money agree, for example bank balance versus books. Gaps land in a review queue.

See Reconciliations See Inbox
Self Assessment

How many individuals report Income Tax to HMRC (including many sole traders and landlords). Company corporation tax uses the CT600 instead.

Read the Self Assessment deadline Read MTD for Income Tax 2026 See Tax prep
Small company

A company within UK size thresholds that can use small-company accounts rules. Larger than a micro-entity, still lighter than full IFRS-style reporting.

Compare micro-entity and small company
Trial balance

A list of every account balance at a point in time. Accountants use it as a starting point for year-end and tax packs.

See Connect
VAT cash accounting

A scheme where some businesses account for VAT on money received and paid, rather than on invoice dates. Eligibility and fit are accountant decisions.

Read the VAT return checklist Read MTD for VAT
VAT registration threshold

The turnover level at which most UK businesses must register for VAT. The figure changes over time: check current GOV.UK guidance.

Read MTD for VAT
VAT return

The periodic return VAT-registered businesses send to HMRC, usually quarterly, summarising VAT due or reclaimable.

Read the VAT return checklist
Working capital

The short-term money tied up in the business: typically stock, debtors and cash, minus creditors. Timing matters as much as the total.

See Cashwatch™
Year-end accounts

The statutory accounts a company prepares for an accounting period, filed with Companies House (and used for tax).

Read the year-end checklist

Definitions are general information for UK readers. Nothing here is regulated advice.