A working scorecard for finance leaders weighing a system built specifically for agencies with: job costing, WIP, retainers, resourcing, against a generalist ledger. Scored across nine practitioner dimensions — quoted from what each vendor discloses in its own documentation, or what is publicly available. Not paraphrased or assumed.
This is a different decision from leaving Xero for an AI-native ledger. Some of the systems below replace your general ledger outright; others are built to sit on top of Xero, Sage or QuickBooks and leave the ledger alone. See The Xero Exit Framework for the generalist AI-native comparison. We're also looking at whether the non-GL layers below could sit just as well on top of an AI-native ledger instead of a legacy one, watch this space.
An agency that's outgrowing Xero and a bag of spreadsheets, generally has two roads available, not one. The first is a generalist AI-native ledger built to replace the accounting system itself, that's the comparison in The Xero Exit Framework. The second is a system built specifically for agencies, with proper job costing, work-in-progress reporting, retainer and flexible client billing and resourcing, that either replaces the ledger too, or deliberately leaves the GL alone and layers on top of whatever is running the books.
That second road doesn't get the same attention. It isn't venture-funded in the same way, it doesn't put out funding announcements, and mostly it has been running agencies for a decade or two in the background, not launched this year. But it's frequently the more direct fit, because it was built around the specific problem, job costing against an estimate, bespoke client billing, a retainer burning down against a fixed fee, a media or production estimate needing a purchase order, then paid only once the client has, rather than around being a general-purpose ledger with agency features bolted on.
We've spent close to two decades assessing platforms exactly like these for agency and professional-services clients, including hands-on implementation and direct evaluation experience with several of the names below. What follows is the same discipline as the Xero Exit Framework: read each vendor's own public pages, quote what they actually say, and flag plainly what they don't say.
Search for "best agency management software" and most of what surfaces is a listicle ranking whoever pays for placement, or a vendor's own "us versus them" page. Almost none of it is written from the seat that has to defend the choice afterward: a finance lead who has to know whether a system actually recognises revenue against job progress, tracks a retainer's burn rate in real time, or quietly still needs a separate accounting platform underneath it before anyone's told them that.
This scorecard covers Deltek Maconomy, Deltek WorkBook, Accountability (Counta), Advantage, Magnetic, Paprika, and Synergist, seven systems built specifically for agencies and project-based professional-services firms, against nine dimensions that decide whether one fits. Ratings are drawn from each vendor's own product pages, documentation, and review-platform data as of September 2026, read for what's actually disclosed rather than implied.
Unlike the AI-native ERP comparison, several of these systems are deliberately not general ledgers at all. The first question below is the one to answer before any of the others.
| Dimension | Maconomy | WorkBook | Accountability | Advantage | Magnetic | Paprika | Synergist |
|---|---|---|---|---|---|---|---|
| Core financials | Full ERP/GL, statutory accounting built in. | Native GL posting exists; ships official Xero/QuickBooks connectors. | Full GL; positions itself as the system of record. | Full GL, GAAP-compliant reporting built in. | Explicitly requires Xero, Sage, QuickBooks or Pastel underneath. | Full GL fused to job costing. | Explicitly "not an accounting system"; requires Xero, Sage, QuickBooks or similar. |
| Job costing & WIP | WIP, revenue and profitability tracked by project. | Cost adjustments, WIP recalculation, job-margin ranking. | Named "WIP Take Up" module, multiple formal reconciliation methods. | Actual-vs-quoted tracking with risk analysis. | WIP/unbilled-time visibility confirmed; no formal rev-rec method disclosed. | Budget-vs-actual confirmed; "WIP" language absent from vendor pages. | Estimate-to-actual tracking; formal rev-rec is a distinct paid module. |
| Retainer & fee billing | "Retainer" not used anywhere; billing is hourly/fixed-fee/progress only. | Dedicated retainer project type plus overage alert; no forecast-vs-actual reporting shown. | Retainer reconciliation function plus a named summary report. | No "retainer" language; flexible advance/accrual billing instead. | Explicit retainer module with continuous burn tracking and per-retainer profitability. | No "retainer" language; recurring invoicing only. | Explicit retainer billing, a worked burn example, a named retainer-focused case study. |
| Time, utilisation & resourcing | Time/expense/absence tracking, utilisation by day/week/month. | Timesheets confirmed; "30% utilisation boost" is an unsupported marketing figure. | Named utilisation report plus several other named time reports. | Multi-source capture, over/under-booking and rack-rate-vs-cost visibility. | Timer/calendar capture, real-time utilisation by person/project/client. | Calendar-integrated capture, over/under-servicing visibility. | One-click timesheets, utilisation dashboards, drag-and-drop scheduling. |
| Procurement & production costs | Job-linked purchasing confirmed; no media/markup specifics disclosed. | Job-linked POs, VAT-aware, dedicated media-cost-split feature. | PO caps, named media WIP module, direct Mediaocean/Freewheel integrations. | PO/insertion-order matching, automated media orders, accrued-liability tracking. | PO workflow with markup fields; no media-commission specifics. | PO/invoice workflow with spending limits; no markup specifics. | Job-linked POs, supplier/client markup rules, automated supplier-invoice processing. |
| Multi-entity & consolidation | Native multi-company/currency/language; no intercompany detail disclosed. | No WorkBook-specific consolidation documentation found. | FX consolidation, automated interoffice billing, genuinely large multi-office case studies. | Multi-office reporting confirmed; multi-currency undisclosed. | Confirmed, but gated to the top (Enterprise) tier only. | Explicit multi-company/currency; a named customer citing 65 countries. | Dedicated multi-entity module with intercompany cross-charging. |
| Geographic & statutory coverage | "120 countries" claimed (G2); no specific list on vendor pages. | VAT configurable at PO level; no country list. | "30+ countries" claimed; no tax-regime list. | Explicitly US-centric; no VAT/GST evidence. | No explicit list; integration partners imply UK/EU/US/AU/SA reach. | Strong footprint (18 countries); only UK MTD named as a statutory claim. | UK-centric; no VAT specifics or non-UK country list. |
| AI & automation | "Ask Dela" natural-language Q&A and AI summaries; not agentic. | "Ask Dela" AI orchestrator with an AI scheduling assistant. | MCP-based AI connector, explicitly read/analyse only. | No AI/agentic feature found. | "Maggie AI" explicitly not yet live. | No AI feature found on the vendor's own product. | No AI/copilot feature found. |
| Indicative cost | Quote-based enterprise sales. | Quote-based. | No pricing page found. | Third-party listing suggests ~$498/mo starting, unconfirmed. | Solo free · Essentials from £10/user/mo · Pro from £17–£22/user/mo. | "Contact vendor" only, no pricing page. | Foundation from £300/mo min · Professional £650/mo min · Enterprise £1,600/mo min. |
The two published-pricing cells above use simple per-unit or minimum-subscription figures for the currency toggle (not full worked totals); see each vendor's own pricing page for the complete tier breakdown.
Not agency-first by Deltek's own segmentation — a full standalone ERP built for professional-services firms broadly (consulting, architecture and engineering, IT services) that agencies also use at scale.
Deltek's actual agency-specific system — "used by marketing, advertising, and creative agencies of all sizes, from global networks to independent shops."
Built by agency CFOs, for agencies, and it reads that way — the most formally-documented WIP mechanism of the seven.
The oldest name here (since 1977) and, alongside Accountability, the most media-buying-native of the seven.
Explicitly not a ledger, and says so itself: "For your accounting ledger, Magnetic syncs directly with Xero, Sage, QuickBooks or Pastel."
The longest-established brand of the seven, with the deepest creative/PR client roster — one case study customer has run it since 2002.
The most explicit retainer-billing documentation of the seven, with a named case study built around it: a PR agency client stating "around 70% of our work is retainer-based."
Not one of these seven systems discloses agentic AI capability today. The closest are Deltek's "Ask Dela" (natural-language Q&A and AI-generated summaries, shared across Maconomy and WorkBook), Counta's MCP-based AI connector (explicitly read-and-analyse only, with an unusually candid caveat that "people still need to review and approve important decisions"), and Magnetic's "Maggie," which is marketed as "coming soon" rather than shipped. Advantage, Paprika and Synergist disclose no AI feature at all. Compare that to the four AI-native platforms scored separately, where agentic posting and governance is the central question. The trade a buyer is actually making: proven, purpose-built depth on job costing, WIP and retainers today, against a generalist ledger's head start on AI, which is real, but is also a general-purpose ledger's feature set adapted to agency work rather than the reverse.
We believe it's the fastest way to get the state of this category right. One thing goes further than a scorecard can.
I run your project (job) mix, client billing requirements, inter-office layout and current tooling against these seven systems (and the four AI-native ones) and hand you a scored, written recommendation — grounded in hands-on implementation experience or direct evaluation of several of these platforms, not just the research behind this page. We'll have an open discussion so you won't have to interpret the output alone.
Leave your email and a line on what you're weighing up. I'll reply personally within one business day.
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