Somewhere in your firm right now, there's a budget conversation happening - or about to happen - where someone is proposing a digital investment and someone else is asking whether it's really necessary this year. Both of them are arguing without the one piece of information that would actually settle it: what are comparable firms spending, and what are they getting for it?
I find this genuinely baffling. Professional services leaders are obsessively competitive about almost everything - fee rates, lateral hires, league table positions, office square footage. But when it comes to digital investment, most firms operate in near-total darkness about what their peers are doing. Six-figure allocation decisions get made on gut feel and whatever the IT director managed to squeeze into last year's budget, plus or minus ten percent.
That's not a strategy. That's inertia with a spreadsheet.
Every firm is different. We can't run our business based on what other firms are doing. We invest what makes sense for our situation.
Sure. And I'd agree with that if you actually knew what other firms were doing and had consciously decided to diverge. But that's not what's happening. What's happening is that you don't have the benchmark data, so you're telling yourself you don't need it. There's a difference between choosing your own path and not knowing the paths exist.
This piece is an attempt to fix that. I've pulled together the best available investment data across B2B professional services - from Gartner, Forrester, Hinge Research Institute, and the major consultancy outlook reports - to give you a credible picture of where firms like yours are putting their money, how much they're putting there, and what the ones getting results are doing differently.
Let's start with the headline number. According to Gartner's most recent IT spending forecasts, professional services firms are allocating between 3.5% and 6.5% of revenue to technology investment broadly. That range is enormous, and it hides more than it reveals.
The more useful figure comes from Hinge Research Institute's High Growth Study, which consistently finds that high-growth professional services firms - the ones growing at 20% or more annually - spend significantly more on marketing and digital capability than their average-growth peers. We're not talking about marginal differences. High-growth firms typically invest 2-3x more as a percentage of revenue in digital and marketing capabilities than firms growing at or below the sector average.
Forrester's data on technology budgets in professional services tells a similar story. Firms that have increased their digital investment over the past three years are disproportionately represented among those reporting improved client acquisition costs, better retention rates, and stronger competitive win rates. Firms that held investment flat or cut it are disproportionately represented among those reporting the opposite.
The pattern isn't subtle. But before we go further - investment level alone doesn't determine outcome. I've seen firms spend a fortune and get nothing. One firm I worked with early in my career had committed nearly £2m to a digital transformation programme. Impressive number. The problem was that about 60% of it went into a platform migration nobody had properly scoped, the remaining budget ran out before they'd touched the client-facing experience, and eighteen months later the managing partner was explaining to the board why the website still looked like it was built in 2014. The quantum matters, but so does where it goes. We'll come back to that.
One of the things I've noticed over 25 years of doing this work is that most firms don't have a structured way to think about their digital investment portfolio. They think in terms of projects - "the website rebuild" or "the CRM migration" - rather than investment categories that can be compared, balanced, and optimised over time.
So here's a framework we use. Digital investment breaks down into four categories:
Experience and design - your website, client portals, digital touchpoints, UX, conversion optimisation, and accessibility. The stuff your clients and prospects actually see and interact with.
Platform and technology - your CMS, integrations, hosting infrastructure, and the underlying technology stack that everything else sits on. The stuff that enables (or constrains) everything else.
AI and data - readiness assessments, data quality, AI strategy, implementation of AI tools, and the analytics and intelligence layer that should be informing your decisions.
Strategy and transformation - the advisory and planning work that decides what gets done, in what order, and why. Digital strategy, technology strategy, transformation programme design and governance.
These four categories give you a way to have a budget allocation conversation that's more sophisticated than "how much are we spending on digital this year?"
Because the question isn't just how much. It's where.
Based on the data I've been able to compile - synthesised from multiple analyst sources rather than a single definitive study, so take the precision with appropriate scepticism - the allocation breakdown across these four categories looks roughly like this for mid-market professional services firms:
Experience and design tends to account for 25-35% of digital investment. Platform and technology takes the largest share at 30-40%, which makes sense given that infrastructure modernisation and replatforming are expensive and often overdue. AI and data is the fastest-growing category, having roughly doubled its share over the past two years to sit at 15-25%. Strategy and transformation takes the remaining 10-15%.
Here's where it gets interesting. When you look at the allocation patterns of firms that are outperforming commercially - the ones in Hinge's high-growth cohort, the ones reporting above-average win rates and retention in Forrester's surveys - their allocation is noticeably different from the average.
High-performing firms over-index on experience and design. They're spending more on what their clients actually see. They also tend to spend proportionally more on strategy and transformation - the planning and governance work that ensures the other investments land properly. Where they often spend less, as a proportion, is on platform and technology. Not because they neglect it, but because they addressed their platform debt earlier and aren't playing catch-up.
That last point is worth sitting with. If you're currently spending 40%+ of your digital budget just keeping legacy platforms running, that's not investment. That's maintenance dressed up as progress. I've written about this separately - the compounding effect of deferred platform decisions is one of the most expensive patterns in professional services, and it's almost always invisible until it isn't.
Aggregate data only takes you so far, so let me get specific.
A 150-person management consulting firm we worked with had built its entire practice on referrals. The website generated fewer than three enquiries a month - the partners had basically written it off as a brochure. After investing in a content-led digital experience platform (experience and design category, roughly £120k total), they saw a 340% increase in inbound enquiries within six months. Within twelve months, 18% of net new revenue was attributable to the website. The senior partner told me afterwards: "For twenty years, every piece of new work came through our personal networks. We never thought a website could change that. We were wrong." Twenty years of scepticism, dissolved in twelve months.
A top-50 UK law firm with 180 lawyers across four offices was getting 30,000 monthly website visitors but converting fewer than 4% into enquiries. Two sprints of work restructuring the site around client needs rather than internal categories - qualified enquiries up 67% in six months. Partner satisfaction with the website went from 31% to 89%. That second number is the one I find more interesting, actually. When partners start telling clients to look at the website rather than apologising for it, something has genuinely shifted.
A specialist commercial lender whose broker portal was losing business - 40% of applications contained errors, brokers were actively placing business elsewhere - invested in rebuilding the application experience. Broker application volume up 38%. Errors down 54%. Three previously lost brokers returned within two months. The head of distribution put it bluntly: "Brokers have a choice. If your portal is difficult, they will go somewhere else."
And then there's the one that surprises people most. A mid-sized wealth management firm spending £600k annually across three vendors with no roadmap invested in a pure strategy engagement - no build at all, just fourteen days of assessment and a three-year roadmap. Result: £180k of annual spend redirected to higher-impact work, a legacy platform decommissioned, vendor consolidation saving £85k per year. Sometimes the most valuable thing you can do is stop spending badly before you start spending well.
None of these are firms with unlimited budgets. They're mid-market businesses that made focused investments in the right category at the right time.
The consequences of underinvestment aren't usually dramatic. They're cumulative. They sneak up on you.
Hinge's research consistently shows that firms investing below the sector average in digital and marketing capability grow slower - not catastrophically, but persistently. Over three to five years, that gap compounds into a meaningful difference in market position. You don't notice it in any single quarter. You notice it when you look up and realise you've been losing pitches to firms you're pretty sure you're better than.
I had that exact conversation with a managing partner a few months ago - mid-tier accountancy firm, around 250 people. "We keep losing pitches to firms we know we're better than." I asked what he thought the reason was. He paused, then said: "Honestly? I think they just look more modern than us." He wasn't wrong. He just hadn't connected that observation to a budget decision yet. That's the gap I see constantly - leaders who have correctly diagnosed the symptom but haven't traced it back to the investment pattern causing it.
McKinsey's digitisation research across professional services points to specific patterns: firms with lower digital investment levels tend to have higher client acquisition costs, lower retention rates, and longer sales cycles. Their prospects are doing more due diligence, taking longer to decide, and more frequently choosing competitors. Not because the firm's work is worse, but because the digital experience creates doubt where confidence should be.
Forrester's analysis suggests that CX leaders outperform laggards by nearly 80% in customer retention. In professional services, where client lifetime value runs into six or seven figures, even a small retention improvement translates into serious money.
So what does this actually mean for your budget? Here are some indicative ranges based on what we're seeing across the firms we work with and the published benchmark data. Digital investment as a percentage of revenue, broken down by firm size:
50-person firm (£5-15m revenue): 4-7% of revenue, weighted towards experience and design and platform modernisation. At this size, you're likely dealing with a website that's outgrown its original brief and a technology stack that was chosen for convenience rather than capability. Budget range: roughly £200k-£1m annually across all four categories.
200-person firm (£20-60m revenue): 3.5-6% of revenue, with a more balanced allocation across all four categories and an increasing proportion going to AI and data. Budget range: roughly £700k-£3.6m annually.
500-person firm (£50-150m revenue): 3-5.5% of revenue, with strategy and transformation taking a larger share as the complexity of coordinating digital investment across the firm increases. Budget range: roughly £1.5m-£8.25m annually.
These are ranges, deliberately. A firm that addressed its platform debt three years ago will sit at the lower end. A firm that's been deferring for a decade and is now facing end-of-life on its CMS will need to sit higher, at least temporarily. A firm with a high-digital-exposure client base - where clients interact with you primarily through digital channels - should be at the top of the range or above it.
The point isn't to hit a specific number. It's to know where you sit relative to firms that are growing faster than you, and to make a conscious decision about whether that gap is acceptable.
I want to come back to something, because it's the thing I see most often in budget conversations.
A managing partner sits down with a proposal for, say, £300k of digital investment. They ask the obvious questions: is this a lot? Is it enough? Are we spending more or less than comparable firms? And nobody in the room can answer with data. So the decision gets made on instinct, on whatever happened last time, or on whatever the loudest voice in the room believes.
That's arguing with an empty chair. You're having half a conversation.
I've written a companion piece on how to plan digital investment when budgets are tight, which gets into the mechanics of phasing and prioritisation. And if you're taking this to a board conversation, there's a separate piece on what every board should know before approving a digital transformation budget that's worth reading alongside this one.
But the starting point - the thing that makes all of those conversations more productive - is knowing where you stand relative to your peers.
If you want to see where your firm sits relative to peers in your specific sector, book a benchmarking conversation with us. If you'd prefer a structured template for mapping your current investment allocation across the four categories against the sector benchmark, download the digital investment comparison template. It takes about twenty minutes to complete and gives you something concrete to take into your next budget discussion.
We're also publishing sector-specific editions of this analysis - legal, financial services, and consulting - over the coming months. Let us know if you want to be notified when your sector's edition goes live.
The firms pulling ahead right now aren't necessarily smarter than you. They just know what the benchmark looks like. Do you?