Monthly management accounts for startups: what to include and why investors care

Management accounts are the numbers you manage with. They are not a format Companies House prescribes, and they are not a marketing document. For a UK startup they are usually a monthly pack: how the month performed, where the cash went, and what the founder thinks happens next. Investors ask for them because a raise is a decision about the next eighteen months, and last year’s filed accounts cannot answer that.

Statutory accounts still have to be prepared and filed. GOV.UK explains what annual accounts include and when a private company files them. Treat that as the legal record. Treat the monthly pack as the operating record. The two should not disagree about the same month, but they are not the same document.

What to include

Keep the pack stable. Changing the lines every month makes a trend impossible to read.

Profit and loss, against something. The month, the year to date, and a comparison. The comparison can be the budget or the previous month. If you have no budget, say so and compare with last month rather than inventing a target the night before the meeting. Show revenue in the categories you actually sell. Show people costs separately from other operating costs. Below that, interest, tax and anything exceptional, labelled as such.

Balance sheet. Cash, debtors, creditors, VAT, PAYE, deferred income, loans and intercompany. A profit and loss with no balance sheet is how cash “surprises” happen. If the balance sheet does not balance, you do not have a pack yet.

Cash. Either a cash flow statement or a bridge from operating profit to the change in cash: working capital, VAT paid, payroll taxes, asset purchases, financing. Founders feel cash. The pack should meet them there. Net burn and runway belong on this page, with the definition written down. A runway that assumes a revenue ramp you have not achieved is a forecast. Label it as one.

Revenue bridge, if you sell subscriptions. New, expansion, contraction, churn, and the ending recurring revenue. One number called “MRR” without the bridge hides whether growth is new logos or price rises, and whether churn is already eating it. The KPI note sets out definitions that survive a follow-up question.

Aged debtors and creditors. Not every line. The balances that are old, large, or both. A customer who owes two months of fees is a cash item and sometimes a revenue-quality item.

Commentary in plain sentences. Three to eight lines. What moved. Whether it is timing or a real change. What you will do before the next pack. Commentary that restates the variance in words is not commentary.

A month-end sequence that fits a small team

You do not need a 40-step close checklist on the wall. You do need an order.

1. Lock a cut-off date and stop backdating casually after it.
2. Reconcile every bank and payment account to that date.
3. Post payroll, including the tax and pension balances, not just the net pay.
4. Review debtors, creditors, accruals and deferred income.
5. Check the VAT control account against the return you will actually file. VAT rules and deadlines are on GOV.UK.
6. Produce the three statements and read them yourself before anyone else does.
7. Write the commentary from the reading, not from the slide you wish you had.

How many days this takes depends on how tidy the month was. Promising a “five-day close” in a deck, before you have done three closes, is how teams miss the date and then stop sending the pack. Publish a day count after you have hit it.

Why investors care

Between rounds, the management pack is the evidence that the company is operated, not only described. A seed investor who already holds shares wants to see whether the plan they funded is the trajectory in the numbers. A new investor wants to see whether the model you just emailed ties to a closed month, and whether the founder notices when it does not.

They also use the pack to judge the quality of revenue and the honesty of costs. Revenue that is invoiced and not collectible shows up in debtors. Costs that are being capitalised, delayed, or run through a different entity show up when the balance sheet and the group are put next to each other. None of that requires a hostile process. It requires a pack that is the same as the ledger.

Corporation tax does not sit inside the monthly pack as a filed return, but the pack should not ignore tax entirely if you are profitable. Rates, including the small profits rate and marginal relief, are published on GOV.UK. A startup that is loss-making still has a corporation tax position: losses, R&D claims if they are real, and the deadline for the return. The return itself is explained on company tax returns.

What to leave out

Do not attach the entire nominal ledger. Do not include a cohort chart you cannot reproduce from the billing system. Do not add a vanity metric because a blog said investors expect it. If you do not have the data, the honest line is that you do not track it yet.

Do not describe the pack as audited. Management accounts are not an audit. If someone needs assurance, that is a different engagement, with a different firm if a statutory audit is required.

Finox’s Founder Finance retainer is this pack, monthly: the close, cash and runway, a one-page KPI view, and a call to read it. Typically £750–1,250 a month, with UK accounts, corporation tax and VAT prepared from the same work. The point of the retainer is that the pack exists in the month, not in the week a process starts.

Frequently asked questions

General information for UK founders, not advice on your own facts. Tax and company-law rules change. Check the linked GOV.UK pages and take advice before you rely on a figure.