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Alto Accounting Ltd86–90 Paul Street
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Home·Who we help·Digital marketing agencies
Digital marketing agencies

Specialist accountants for UK
digital marketing agencies

Retainers as your base, media spend running through your accounts, freelance specialists across PPC, SEO, paid social. We separate earned revenue from passthrough so the books and the tax bill are honest.

Book a 15-minute callSee pricing
Replies in 24 hours, usually same dayDirect to an ACCA accountant, not a chatbot
Retainer + media · monthly viewLive model
REVENUE LEDGER · APRIL 2026Retainers£28,400Project fees£11,800Media (passthrough)£42,300Earned revenue£40,200Held for clients£42,300Reconciliation: ad platforms ↔ client invoicing✓ MATCHED
62%
Retainer share of revenue
Of total earned
£42k
Media passthrough
Held for clients
+18%
Net working capital
After ringfencing
Where marketing agencies bleed money

Three things that quietly
eat your margin.

Almost every agency we've looked at over £400k revenue is doing at least one of these. They don't show up in the headline numbers. They show up at year-end as a tax surprise or a cash crunch.

EARNEDPASS-THRU

Media spend booked as revenue

Most accountants run platform spend through your P&L as turnover. If you're managing £600k of paid media for clients, your books say you're a £1.2m agency – and HMRC, your VAT return, and your tax bill all behave that way. We separate earned fee revenue from money you're holding for clients.

SplitEarned · Passthrough · Reserve
01
IR35 · CEST

Contractor compliance, every retainer

Specialist freelancers across PPC, SEO, paid social and content. Most are inside-IR35 risks if engaged for ongoing work, and CEST results have moved with HMRC's 2026 tooling update. We run determinations on every engagement, not just at year-end.

TrackedIR35 · CEST · Off-payroll
02
£90k!

VAT, MTD and the threshold trap

Crossing the £90,000 VAT threshold on a 12-month rolling basis is easy when retainers grow. MTD compliance is mandatory. We monitor it monthly so you know what's coming, choose the right scheme, and avoid the late-registration penalty plus back-VAT.

MonitoredThreshold · Scheme · MTD
03
Agencies we're built for

Three archetypes
that match how you actually run.

Same playbook, different shape. These are illustrative archetypes, not real clients.

01

An 8-person performance agency on £950k revenue, £1.4m media managed

Mostly retainer-led with PPC and paid social specialists in-house and a freelance creative bench.

What breaks

Books showed £2.35m turnover. VAT, corporation tax forecasts and bank covenants were all running off an inflated number. Founders couldn't explain to a finance partner what their actual margin was.

How we'd work it

Restructure chart of accounts so client media is a balance-sheet item until reconciled, retainer revenue earns monthly, and project fees flow through the P&L cleanly. Monthly reconciliation between ad platforms and client invoicing.

True earned revenue
£950k (was reported £2.35m)
Margin clarity
Per client + per platform
02

A 5-person SEO + content agency growing through retainer pricing

£420k revenue, ~70% from monthly retainers. Two senior strategists, two writers, one developer.

What breaks

VAT registration crept up on them after Q2: rolling 12-month turnover crossed £90,000 mid-quarter. Late registration meant back-VAT on three months of invoices already sent without it.

How we'd work it

12-month rolling threshold monitoring inside Xero with a 30-day alert, plus a flat-rate vs cash scheme review when they crossed. Going forward, the directors' salaries use the £12,570 personal allowance and the £500 dividend allowance before any higher-rate exposure kicks in.

VAT
£90k threshold · MTD-compliant
Director draw
£12,570 salary + planned dividends
03

A 12-person multi-channel agency winning a £600k annual retainer

Existing book of mid-market retainers plus new enterprise client paying quarterly in advance.

What breaks

First quarterly payment of £150k landed in the bank and looked like a great month. Four months later, with no reserve set aside, the corporation tax and VAT on that quarter's earnings hit at the same time as a soft month for new business.

How we'd work it

Move quarterly retainers onto deferred income recognition so revenue earns each month it's delivered. Build a tax-and-VAT reserve account funded automatically off each payment. Add IR35 status determinations on every contractor brought in for the new account.

Reserve
Auto-fund · VAT + CT
Recognition
Monthly · matched to delivery
Tools you can use today

Run your numbers before the call.

Built for UK agencies. Free, no email gate. Use them whether you're ready to switch accountants or just stress-testing.

PROFITABILITY · ON EARNED REVENUE48%Gross margin · Earned onlyUK marketing benchmark · 50–60%Utilisation · 71%ALTO · UK BENCHMARKS

Agency Profitability Calculator

Strip out media passthrough, plug in your real costs, and compare your gross and net margin to UK marketing-agency benchmarks.

Open the calculator
IR35 · STATUS DETERMINATIONSubstitution right · genuinePASSMutuality of obligationPASSControl · how, what, whenREVIEW

IR35 Status Checker

Run a structured determination on each contractor before the first invoice. Built around HMRC's 2026 CEST update, with a printable summary you can keep on file.

Open the calculator
FAQs

Quick answers

Specific to digital marketing agencies. If yours isn't here, ask on the form below.

Why does the way we book media spend matter so much?
Two reasons. First, your VAT, corporation-tax forecasts and any covenants or bank facilities all key off your turnover – so booking £600k of client media as your own revenue makes everything downstream lie. Second, when (not if) a client disputes a charge or asks for a refund, you need a clean trail showing the money was always theirs, not a refund out of your earnings.
Do you handle MTD and quarterly VAT submissions for marketing agencies?
Yes – Making Tax Digital is mandatory and we run it inside Xero. We also choose the VAT scheme that fits how you actually trade: cash accounting if your clients pay slowly, flat-rate if your input VAT is genuinely low and you're under the £150k threshold, standard otherwise. We review the choice annually.
Most of our specialists are freelancers. How do you handle IR35?
We run a status determination on every engagement and document it. The 2026 CEST update changed how some indicators are weighted, so older 'outside' determinations may not stand up if you re-test today. We retest at engagement, on contract renewal, and any time the working pattern changes (e.g. a freelancer becomes effectively a fractional team member).
We've got clients on both monthly retainers and quarterly-in-advance. How do you handle the recognition?
We move quarterly retainers onto deferred income so the revenue earns each month it's delivered, not in the month the invoice is paid. That removes the 'great month / panic month' pattern, gives you clean comparable monthly P&Ls, and aligns the tax and VAT reserves with when the money is actually earned.
Do you set us up with a tax reserve so we don't get caught at year-end?
Yes. Standard part of onboarding: a separate reserve account for corporation tax and another for VAT, both funded automatically off each invoice. By the time the bills arrive the money is sitting there. It's the single highest-leverage habit we set up, and it stops the 'tax bill swallowed our quarter' story almost entirely.
Keep reading

Guides specific to your shape of agency

Compliance

Ad Spend Reconciliation for Agencies

How to reconcile media platforms against client invoicing, treat passthrough properly, and stop your VAT figures running off inflated revenue.

Read the guide
IR35

CEST Tool 2026 Update for Agencies

What changed in HMRC's 2026 CEST update, how to retest existing 'outside' determinations, and which findings now need review.

Read the guide
Pricing

Retainer Pricing Models for Agencies

Six retainer structures used by UK agencies, what each one rewards, and how to recognise revenue cleanly across them.

Read the guide
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Built for digital marketing agencies.
Set up for the next twelve months.

Send a message or book a call. We'll review your current setup and tell you straight whether we can help.

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