Industries
SaaS
Finbryn keeps SaaS books aligned with how subscription revenue actually works under UK GAAP: income spread over the contract term rather than booked on receipt, MRR and churn reconciled to the ledger, and a monthly close built for board and investor reporting. We work inside Xero alongside Stripe or Chargebee.
Management report
Illustrative client · August 2026
GBP
| Line | Aug | Jul | |
|---|---|---|---|
| Revenue | 142,380 | 131,904 | +10,476 |
| Cost of sales | (51,260) | (48,115) | (3,145) |
| Gross profit | 91,120 | 83,789 | +7,331 |
| Payroll | (46,300) | (45,900) | (400) |
| SoftwareNoted | (6,480) | (5,490) | (990) |
| Rent | (8,000) | (8,000) | 0 |
| Other operating | (9,215) | (9,870) | +655 |
| Net income | 21,125 | 14,529 | +6,596 |
Reviewer's note
Software is up on last month after two seats were added mid-month. Revenue includes one milestone invoice that will not repeat next month.
Illustrative. An example of the document, not a client's figures.
Exceptions report
Where the books usually hurt
Revenue recognition on annual and multi-year contracts gets booked as cash instead of spread over the service period
MRR, churn and expansion numbers get pulled from three different tools that disagree with each other
Deferred revenue balances drift because upgrades, downgrades and refunds are not tracked consistently
Board decks need a clean burn and runway number on short notice
Subscription revenue is not cash received
A UK SaaS company that books an annual contract as income the day it is paid overstates that month and understates every month after it. Under FRS 102, revenue from a service contract is recognised as the service is delivered, so deferred income has to move on the balance sheet every month, not just at renewal, and this is the same discipline the Periodic Review 2024 amendments to FRS 102 tighten further for periods beginning on or after 1 January 2026.
Finbryn sets up deferred income schedules tied to actual contract terms pulled from Stripe or Chargebee, then reconciles those schedules to the general ledger as part of the monthly close. When a customer upgrades, downgrades or gets a refund mid-term, the schedule updates instead of quietly drifting out of step with what the billing system shows.
MRR, churn and the numbers a board actually asks for
Most UK SaaS founders pull MRR from their billing tool, churn from a spreadsheet, and cash burn from the bank, and the three numbers never quite agree because they come from different sources of truth. We reconcile MRR, net revenue retention and churn against the general ledger each month so the metrics in a board pack tie back to the books, not a dashboard nobody has double-checked.
Corporation Tax, statutory accounts and diligence
A UK limited company still has to file a Company Tax Return within 12 months of its accounting period end and pay any Corporation Tax due within 9 months and a day of that same date, regardless of how the business measures its own metrics. We prepare the underlying figures on that timetable; the CT600 itself is filed by you or by the UK agent you appoint. Finbryn does not file with HMRC or Companies House. Investors doing diligence on a SaaS raise look hard at deferred income, customer concentration and a consistent chart of accounts, so we build the ledger to match what a diligence team typically requests.
Working with Finbryn
You keep ownership of your Xero file. A named pod handles your account and any change in that pod comes with a recorded handover memo, so continuity does not depend on one person's memory. Books are reconciled weekly and closed by business day five, with pricing published on our pricing page, and terms set out in your engagement letter. Catch-up work for companies that grew fast on manual spreadsheets is priced separately from ongoing monthly bookkeeping, and every file is reviewed by a senior principal before it reaches you.
Questions
Frequently asked questions: SaaS
Do you handle deferred income for annual SaaS contracts under FRS 102?
Yes. Annual and multi-year contracts are recognised over the service period rather than on receipt, with deferred income tracked and adjusted for upgrades, downgrades and refunds.
Can you reconcile MRR between Stripe or Chargebee and the ledger?
Yes. MRR, churn and net revenue retention are pulled from the billing platform and tied back to recorded revenue each month, so board reporting and the books agree.
Will our books be ready for the Company Tax Return deadline?
The underlying figures are prepared on the statutory timetable, filing within 12 months of the accounting period end and paying Corporation Tax within 9 months and a day. The CT600 is filed by you or by the UK agent you appoint.
Do you support usage-based or seat-based pricing models?
Yes. Usage-based, seat-based and hybrid subscription structures each get their own revenue recognition treatment based on how the billing system reports usage.
Can you separate one-off implementation fees from ongoing subscription revenue?
Yes, a one-off setup or implementation fee is recognised on its own schedule, typically over the period the service is delivered, rather than blended into the same recurring line as subscription revenue, since combining the two makes your monthly recurring revenue figure less reliable.
Do you handle revenue recognition for annual contracts?
Yes, subscription revenue is deferred and recognized over the contract period rather than booked on receipt.
Can you produce MRR and churn reporting?
Yes, drawn from the billing system and reconciled to the general ledger each month.
What are the common bookkeeping challenges for a saaS business?
Beyond the basics, deferred revenue balances drift because upgrades, downgrades and refunds are not tracked consistently and board decks need a clean burn and runway number on short notice come up often in this industry. We build the chart of accounts and reconciliation process around those specific patterns rather than a generic template that ignores how the business actually operates.
What software do you support for saaS?
We work inside QuickBooks Online and Xero, along with the other tools listed on this page that are common in the saaS industry. If you have no file yet, we set one up in your name so you own it from day one.
Related services
- BookkeepingMonthly bookkeepingOngoing monthly bookkeeping: transactions sorted into categories, accounts reconciled and month-end reports delivered in the software you already use.
- BookkeepingCatch-up and cleanup bookkeepingMonths or years of books brought up to date and reconciled, with a written record of every adjustment, so monthly bookkeeping can start from a clean base.
Next step
Talk to the team that would run your books
A short call covers your setup, your software and what a first month would look like. You get a written scope and price after it.