What Should a 15-Person Management Consulting Firm Actually Pay for Software?

A boutique consulting firm's software bill doesn't move with headcount the way a typical SMB's does — it moves with how many concurrent client engagements the firm is staffing, budgeting, and billing at once, because each one needs its own resourcing plan and time entry. The single biggest line item in the entire stack is a professional-services-automation (PSA) platform, not the CRM and not accounting, and it alone ranges from $160/mo to $1,800/mo depending on which of four genuinely competing tools a firm picks. Get that one decision wrong — or worse, end up running two at once because a partner never finished migrating off their old one — and it swamps every other line item combined.

Here's what we actually see, tool by tool and pillar by pillar, for a boutique firm around 15 people — a few partners and principals, a small bench of consultants, and a lean back office.

Sales & Marketing: $605-1,285/mo

This pillar is smaller and simpler than in most industries, because a consulting firm's new business is mostly referral- and RFP-driven, not inbound-lead-driven. The real decision is the CRM — HubSpot and Pipedrive are the two genuine options for tracking partner relationships and proposal stages, and you pick one, not both.

HubSpot ($890/mo) earns its price with marketing-automation depth — sequenced nurture emails, landing pages, workflow triggers — that a firm doing genuine outbound lead generation can use. Pipedrive ($210/mo) strips that away for a bare deal-stage pipeline, which is usually all a partner-led firm running a dozen simultaneous referral conversations and RFP responses actually needs. The failure mode runs in both directions: paying $890/mo for HubSpot's automation suite when nobody on the team has ever built a workflow is pure waste, and staying on Pipedrive after the firm starts running real inbound campaigns means proposal tracking and email marketing live in two disconnected systems. LinkedIn Sales Navigator ($260/mo) is the one line item worth a second look at renewal — it's licensed per seat, and firms routinely keep seats active for partners who've moved on or stopped prospecting personally. Calendly ($70/mo) and Mailchimp ($65/mo) are both cheap enough to be the first things trimmed under budget pressure, which is usually a mistake: Calendly removes the back-and-forth email tax on booking discovery calls, and Mailchimp is the lowest-cost-per-referral channel in the pillar for firm newsletters.

Core Operations: $880-1,980/mo — the PSA decision that actually decides your total cost

This pillar decides the stack's total cost, because the PSA platform isn't optional and the four real options span more than 10x in price. Kantata, Scoro, BigTime, and Harvest all do the same underlying job — staffing, time entry, and client billing — and they're genuine direct competitors, not tiers of the same product. Picking one, and only one, is the highest-leverage software decision a consulting firm makes.

Kantata ($1,800/mo) is built for firms coordinating several case teams across concurrent engagements at once — its price buys staffing and utilization depth that a 3-partner shop with one engagement at a time will mostly never touch. Scoro ($700/mo) covers project planning, scheduling, and billing in one lighter-weight platform, the realistic fit for a firm that hasn't hit that multi-team complexity yet. BigTime ($450/mo) trades staffing depth for sharper WIP and realization reporting, a fit for firms that care more about billing-cycle visibility than resourcing. Harvest ($160/mo) is the floor — simple time capture and invoicing for a small team that doesn't need staffing or utilization views at all, but a firm that outgrows it usually finds out the hard way, when consultant assignments start getting tracked in a side spreadsheet because Harvest has no view for it.

ClickUp ($180/mo) sits alongside the PSA rather than competing with it — a general task tracker for internal workstreams and engagement checklists that the PSA's staffing and billing layer doesn't cover. The failure mode here is duplication, not overlap: firms that never draw a clear line between "lives in the PSA" and "lives in ClickUp" end up with the same engagement checklist maintained in both places by two different people. Total pillar cost runs from about $880/mo (Scoro + ClickUp, the common fit for a firm this size) up to $1,980/mo (Kantata + ClickUp, for a firm running genuinely complex multi-team engagements).

Finance: $389/mo — the pillar that barely moves regardless of firm size

Unlike sales and operations, none of the finance tools here have a direct in-category competitor in this dataset, so this pillar is the flattest one in the stack. QuickBooks Online Plus ($90/mo) is the general ledger, reconciled against PSA billing exports — cleanly, if the PSA has a live sync, manually if it doesn't. Gusto Plus ($200/mo) runs payroll for a mix of salaried consultants and contract subject-matter experts, and misclassifying a 1099 SME as a W-2 employee (or the reverse) is a real compliance exposure, not just an admin inconvenience. Ramp is functionally free and pays for itself through automatic receipt capture and categorization on partner travel and client-dinner expenses. Bill.com ($99/mo) automates vendor bill approval for subcontracted specialists and research subscriptions — but only Kantata lists a direct integration with it; firms running Scoro, BigTime, or Harvest are assigning vendor bills to specific engagements by hand.

Admin & Security: $505/mo

This pillar carries real weight for a consulting firm because client confidentiality obligations, not just internal IT hygiene, are on the line. Google Workspace ($170/mo) covers email, shared drives, and the docs consultants draft deliverables in — the recurring failure mode is a shared drive left open to a consultant who's rolled off an engagement, a genuine confidentiality exposure, not a hypothetical one. 1Password Business ($95/mo) stops partners and consultants from reusing or texting client-portal logins, which matters directly for the confidentiality commitments most engagement letters make. Huntress Managed EDR ($85/mo) puts human-monitored threat detection on consultant laptops carrying sensitive client data — a growing number of enterprise clients now ask about managed endpoint security directly in vendor security questionnaires, and not having an answer can cost a firm the engagement. DocuSign ($80/mo) handles e-signature for statements of work, MSAs, and NDAs; every day an engagement start is delayed waiting on wet-ink signature routing is a day of billable time the firm doesn't get back. Slack ($75/mo) coordinates case teams across multiple concurrent engagements, and the real risk here isn't cost, it's channel sprawl — client-sensitive discussion sitting indefinitely in an engagement channel nobody's ever archived.

What this adds up to

Add it up and a genuinely optimized stack for a 15-person consulting firm lands in the $2,379-4,159/mo range. But the realistic pre-consolidation number we see for a firm this size — duplicate CRM and PSA subscriptions, plus contract pricing nobody's revisited since the firm was smaller — runs $5,069-7,800/mo for the exact same functional coverage.

The fastest way to see where your specific stack lands against these numbers is to run the free audit — it uses your actual headcount and current spend, not a generic estimate.