Your team is fighting on all fronts. Projects keep coming, consultants are giving it their all, and yet… your margin isn’t keeping up. Worse: you feel like you’re spinning your wheels, chasing profitability that keeps slipping away despite all your efforts.
It’s not just a feeling. Three blind spots are quietly eroding the profitability of agencies and consulting firms, without anyone noticing day to day: pre-sales that ties up entire teams with no guarantee of a signature, staffing that constantly juggles between overload and bench time, and invoicing that drags on, gets lost, or arrives late to clients who pay whenever they feel like it.
The numbers don’t lie. Lost productivity and poor lead management cost businesses at least $1 trillion a year, according to an industry study. In France, 82% of companies experienced late payments in 2023, according to Coface, and the country even recorded Europe’s sharpest deterioration in payment times in 2025, with an average delay of 14.1 days, according to Altares.
A breakdown of these three black holes, with concrete solutions to regain control.
I. Pre-sales: the phantom time budget
A massive investment… often invisible
Pre-sales is the moment when everything is decided. You mobilize your best people: sales, creatives, strategists, sometimes even external freelancers. You invest time, energy, financial resources… for an uncertain outcome. And too often, with no visibility into what it really costs you.
Every minute spent on a deal with no guaranteed return is a potential loss. Your sales director’s time, your marketing team’s time, your strategists’ hours… it all has a cost. But how many agencies and firms can say exactly how much a given lost pre-sales effort cost them?
The equation is brutal: we often look at a budget without factoring in everything invested to win the deal. If we win it, we’re happy. If we don’t, we move on without drawing any quantified lessons. Result: it’s impossible to know where resources really go, and even harder to optimize the process.
Sales stats also reveal just how complex pre-sales is. The average salesperson makes 52 calls a day and spends 15% of their time leaving voicemails. Even more striking: 92% of salespeople give up after four “no”s, while 80% of prospects say “no” four times before saying “yes.” This imbalance between effort and outcome explains why pre-sales can become a money pit without clear visibility.
Hidden costs that add up
Beyond pure sales time, pre-sales mobilizes resources you probably don’t account for:
- Internal time spent preparing pitches, refining strategic recommendations, producing mockups or moodboards
- Purchasing external services to strengthen your proposal (studies, visuals, prototypes)
- The impact on operational teams’ workload, who must juggle billable production and non-billable pre-sales
- Travel, entertainment expenses, sometimes even investments in specific tools for a prospect
Without precise decision traceability, it’s hard to know what’s being spent month after month. And without that knowledge, it’s impossible to adjust course, refuse certain overly time-consuming competitions, or refocus efforts on the most promising prospects.
When pre-sales becomes a bottomless pit
The real danger is the lack of warning signals. Without clear indicators, how do you know when the risk becomes excessive? How do you spot projects that consume too much time or too many resources relative to their chances of success?
Some pre-sales efforts consume considerable energy even though the conversion rate is low. Others require financial investments (subcontracting, paid studies) that will never be recovered if you lose. Meanwhile, your teams are working for free, at the expense of projects that actually bring in revenue.
Actionable solutions to regain control:
Budgeting for pre-sales becomes essential. You need to determine upfront how much time and resources you’re willing to invest, then track those investments rigorously. Setting up warning signals helps you spot time-consuming projects before they drag down your profitability.
Calculating a salesperson’s cost per conversion is also essential. How much does each signature cost? What’s the ratio of time invested to contracts signed? This data helps you arbitrate between opportunities and say no when necessary.
Finally, defining budget thresholds by prospect type helps you rationalize your efforts. A local SMB shouldn’t require the same resources as a large international account. You still need to formalize it.
II. Staffing: the perpetual tightrope walker
The name of the game: every minute counts
Staffing is the engine room of your profitability. Knowing who works on what, when, and for how long directly determines your margin. Every hour must be optimized; every consultant must be assigned to the right project at the right time. Ideally.
In reality, too many agencies and firms are still flying blind. Schedules are made by gut feel, assignments are decided in weekly meetings without a consolidated view, and budget overruns are discovered too late. Result: projects that blow past sold time, teams under pressure, and margins collapsing.
TACE (Taux d’Activité Congés Exclus) is the key indicator for measuring staffing performance. It represents the percentage of an employee’s working time devoted to billable tasks, excluding leave periods. It’s a major standard for all businesses that sell consultants’ work: consulting firms, IT services companies, agencies, engineering firms…
Without this rigorous tracking, it’s impossible to know whether your teams are under-staffed, overloaded, or worse, working for free. How many times has a project exceeded the planned hours without anyone realizing it before closeout?
The three traps of blind staffing
First trap: if time isn’t tracked, it isn’t billed. That’s the golden rule. How many hours disappear every month simply because they aren’t recorded? Without a dedicated tool, you often realize too late that the time budget has exploded. Result: unbilled hours, eroded margins, and profitability evaporating.
Second trap: constant rush with no steering. In agencies, rush mode is the norm. Deadlines pile up, teams hustle… but working more doesn’t mean earning more. Without visibility into schedules, projects slip, teams scatter, and overwork becomes the rule. You lose control—and your profitability pays the price.
Third trap: chaotic schedules and an impossible balance. Without a tracking tool, it’s hard to know who’s doing what, how much time it takes, and above all whether those hours will be billed. Some consultants are swamped while others are on the bench. This uneven distribution hurts overall productivity and fuels frustration.
High consultant turnover can even force firms to refuse or put projects on hold, with a direct impact on profitability. Not to mention hidden costs: recruiting, training, lost productivity during the transition period… all factors that degrade staffing ROI.
Staffing in a post-Covid context
The macro context doesn’t help. Labor productivity in France has fallen by 8.5% compared to its pre-Covid trend, according to the Banque de France. This loss is partly explained by workforce composition effects: the surge in apprenticeships (positive for employment) temporarily impacts average productivity, as does onboarding less experienced profiles.
Companies now have to juggle complex equations: meeting employees’ expectations (flexibility, work-life balance, meaning at work) while managing the urgency of client projects and the profitability imperative. Staffing has become more complex, and competition more intense.
Indicator | Without a staffing tool | With a staffing tool |
Real-time visibility | ❌ None | ✅ Full |
Unbilled hours | 🔴 Frequent | 🟢 Minimized |
Overrun detection | ⏰ Too late | ⚡ Instant |
Team planning | 📊 By intuition | 📈 Data-driven |
Workload/resource balance | 🎲 Random | ⚖️ Optimized |
Regain control of staffing
Concrete actions to implement:
Track every hour spent to make sure nothing slips through the cracks. That’s the foundation. If you don’t measure, you can never optimize.
Getting alerts when budgets are exceeded lets you adjust schedules before it’s too late. You regain control and avoid nasty surprises at the end of a project.
Comparing sold time with actual time spent helps you detect overruns before they get expensive. This comparison should become a weekly reflex, not a post-mortem analysis.
Using a color code in your schedule simplifies management: one glance is enough to see who’s under-staffed, overloaded, or perfectly balanced. Visual clarity saves valuable time.
III. Invoicing: the final stretch… full of pitfalls
The invoice obstacle course
You delivered the project. The team crushed it. The client is happy. And yet, the money doesn’t come in. Between errors, delays, and endless follow-ups, invoicing becomes an obstacle course that suffocates your cash flow.
The numbers are alarming. According to a Deloitte study, 30% of companies experience errors when issuing invoices, leading to longer processing times and additional costs to correct those errors. 60% of French companies experience late payments, according to BPI France.
But the most worrying part is the trend: 82% of French companies experienced late payments over the past 12 months in 2023, according to the Coface survey. Worse, delays are getting longer. Average delays reach 42 days for micro-businesses and 38 days for SMBs. Some micro-businesses even report delays of more than two months in 20% of cases.
The time lost is considerable: small and medium-sized businesses spend 14 hours per week managing overdue invoices, according to Clockify. That’s almost two workdays dedicated to chasing payments instead of creating value.
The 4 mistakes that kill your cash flow
First mistake: time tracking, a constant headache. In many consulting firms, tracking hours worked on each project is a major challenge, if not a constant headache. Without an effective process in place, it becomes difficult to accurately account for the hours worked by each consultant on every project.
This lack of rigor leads to invoicing errors, payment delays, and client dissatisfaction. Poor time tracking also affects estimating and resource planning for upcoming projects, leading to inefficient use of available resources and therefore lower profitability.
Second mistake: opaque invoices. If your invoices are opaque to your clients and they struggle to decipher them, you run the risk of errors, dissatisfaction, payment delays, and confusion. Whether your projects are priced at a fixed rate or on a time-and-materials basis, clarity and transparency are essential.
The invoice must precisely detail the services delivered: type of service, date and duration of the work, name of the responsible consultant. Applied rates must be clearly stated, with unit price, total amount, and pricing method. An incomprehensible invoice is an invitation to disputes or late payment.
Third mistake: sending invoices late, which costs you dearly. Some firms still hold onto their invoices and wait until the end of the month to send them to their clients. Strategic error. Late invoicing leads to payment delays and directly impacts cash flow.
The rule should be simple: issue invoices as soon as the service is completed or delivered. Scheduling automatic reminders to send invoices on time prevents oversights. During busy periods, it’s easy to forget to send an invoice—and sometimes that means months of delay simply because the document was never issued.
Fourth mistake: follow-ups become a full-time job. Failing to track payments leads to unpaid invoices or unidentified delays. Implementing systematic tracking for sent, paid, or overdue invoices is becoming indispensable. Setting up automatic reminders for overdue invoices ensures that situations are not left to linger.
But why these delays? The DGCCRF inspected 1,219 establishments in 2022, with an anomaly rate of 33%. Failures in accounting organization are glaring: invoice approval workflows that are too long or complex, shared service centers located abroad. Large companies are particularly affected by these dysfunctions.
On the client side, 41% of delays are deliberate, aimed at managing their own cash flow, according to Coface. 27% of companies attribute delays to their clients’ financial difficulties.
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The French context in 2025: record deterioration
The situation is deteriorating. France recorded Europe’s sharpest deterioration in payment times in 2025, according to Altares, with an increase of one day in a year. Now, fewer than one organization in two pays its suppliers on time: only 45.2% meet deadlines.
In the private sector, delays average 13.3 days late, compared to 12 days in early 2024. Even more worrying: more than 9% of players now report delays of over a month, a four-year record.
There is, however, a glimmer of hope. The consulting and business services sector crossed a milestone in 2022: for the first time, its payment times fell below the 60-day legal threshold, according to the Banque de France report. But with the overall deterioration in 2025, this improvement could be called into question.
Take back control of your invoicing
Solutions to secure your cash flow:
Implementing reliable, integrated time-tracking software is the first step. It lets you accurately record hours worked, avoid invoicing errors, and ensure rigorous accounting.
Issuing invoices as soon as the service is completed or delivered mechanically shortens payment times. Not waiting until month-end means gaining precious days for your cash flow.
Detailing the services delivered precisely on your invoices limits disputes. Type of service, date, duration, consultant name: every element matters to ensure transparency.
Clearly defining late-payment penalties in contracts from the start sends a strong signal. It’s also a concrete way to limit deliberate delays.
Setting up systematic invoice monitoring with a visual dashboard lets you immediately spot overdue invoices. Scheduling progressive follow-ups (friendly reminder email, then calls or registered letters) structures your process and saves you considerable time.
Stop letting these black holes suck away your profitability
Uncontrolled pre-sales, blind staffing, chaotic invoicing: these three black holes aren’t inevitable. They’re the result of a lack of steering, visibility, and the right tools. But they’re not inevitable.
Every minute invested in pre-sales without traceability, every hour worked without being tracked, every invoice that drags on represents a profitability leak. And these leaks add up, month after month, until they become chasms that drag down your business.
The real cost of inaction is considerable. But the good news is that solutions exist for each of these three areas. Digitization and the right tools make it possible to regain control. The challenge is simple: move from “firefighter” mode—putting out daily fires—to “strategic pilot” mode—anticipating and optimizing.
Running an agency or consulting firm shouldn’t be done blind. An integrated management tool helps you gain clarity on resource allocation, time tracking, and the profitability of each engagement. No more guesswork: you can see in real time who’s doing what, detect overruns before they get expensive, and assign the right people to the right projects.
Stop letting these three black holes suck away your profitability. It’s time to take the controls with a complete view of your business. Your cash flow will thank you.
You may be asking yourself these questions?
01 How do you calculate the true cost of a pre-sales effort?
To calculate the true cost of a pre-sales effort, you need to add up:
- The time spent by each team member (salesperson, strategist, creative) multiplied by their hourly cost
- Purchases of external services (studies, freelancers, prototypes)
- Travel and entertainment expenses
- Specific tools or licenses used for the pitch
Ideally, track these elements in real time in a management tool to get a precise view. You can then calculate your conversion rate (number of pre-sales wins / total number of pre-sales efforts) and your average cost per signature.
02 What is TACE and why is it important?
TACE (Taux d’Activité Congés Exclus) is the key staffing performance indicator. It measures the percentage of an employee’s working time devoted to billable tasks, excluding leave periods.
TACE is important because it helps you:
- Measure your consultants’ true profitability
- Identify employees who are overloaded or underutilized
- Optimize resource allocation across projects
- Compare performance between teams or periods
- Make strategic staffing decisions
An optimal TACE varies by sector, but is generally between 75% and 85% for consulting firms and agencies.
03 How can I reduce late payments from my clients?
To reduce late payments, adopt these best practices:
Upfront:
- Clearly define payment terms and late-payment penalties in your contracts
- Request deposits for major projects
- Check prospects’ financial health before signing
During the project:
- Issue invoices immediately after delivery (not at month-end)
- Make sure your invoices are clear, detailed, and error-free
- Offer multiple payment methods to make payment easier
After sending:
- Set up systematic monitoring with a visual dashboard
- Schedule automated follow-ups (friendly reminder on D+7, then escalation)
- Don’t hesitate to call directly for significant delays
Automated invoicing software can handle these follow-ups and save you up to 14 hours per week, according to the statistics.
04 What tools should I use to improve how I run my agency?
To improve how you run your agency or consulting firm, prioritize integrated tools that centralize:
For pre-sales:
- A CRM to track opportunities and calculate your conversion rate
- A time-tracking tool to allocate pre-sales hours by prospect
- Dashboards to visualize cost per pre-sales effort and per signature
For staffing:
- A real-time visual schedule with color coding (available / staffed / overloaded)
- An automatic alert system in case of budget overruns
- TACE tracking by consultant and by team
For invoicing:
- Invoicing software connected to time tracking
- Configurable automated follow-ups
- A cash-flow dashboard with outstanding invoices
Ideally, choose an all-in-one solution that connects these three dimensions rather than juggling several disconnected tools.
05 Is it normal to lose money on some pre-sales efforts?
Yes, it’s normal to invest in pre-sales efforts you won’t win. That’s inherent to sales. The real question is: how much are you willing to lose, and how do you optimize that ratio?
Statistics show that 80% of sales require five follow-up calls, and that 80% of prospects say “no” four times before saying “yes.” Pre-sales is therefore a risky but necessary investment.
To limit losses:
- Qualify your prospects better upfront (budget, decision-maker, timing)
- Define investment thresholds by prospect type
- Analyze your conversion rate by customer segment
- Don’t hesitate to decline competitions that are too time-consuming with little chance of success
- Make the most of lost pre-sales efforts (reuse content, learnings)
The goal isn’t to have a 100% conversion rate, but to optimize the investment/return ratio across your entire sales pipeline.
