The verdict in three sentences
Off-the-shelf ATS tools handle talent pools and job ads well, but rarely an agency's full cycle: mandate, submission, placement, contingency fee invoicing and rebate or replacement guarantee. For 12 consultants and 300 placements a year, a custom ATS at EUR 30,000 to 70,000 pays back quickly once it removes missed invoices and duplicate tracking in Excel. The talent pool of 40,000 candidates then becomes a usable asset instead of a dormant database.
Off-the-shelf vs custom ATS: cost comparison
| Criterion (2026 estimate) | Off-the-shelf ATS | Custom ATS |
|---|---|---|
| Upfront cost | EUR 2,000 to 8,000 configuration | EUR 30,000 to 70,000 |
| Subscription | EUR 80 to 180 per user per month | None |
| Annual cost for 12 users | EUR 11,520 to 25,920 | EUR 5,000 to 10,000 (maintenance, hosting) |
| 5-year cost | EUR 59,600 to 137,600 | EUR 55,000 to 120,000 |
| Contingency fee invoicing | Missing or via export | Native, triggered on placement |
| Replacement guarantee (3 to 6 months) | Manual tracking | Automatic alert and credit note if needed |
| Pool of 40,000 candidates | Keyword search | Search by skills, salary, mobility |
Over 5 years the costs converge: the difference lies in what the tool earns, not what it costs.
The modules that pay off in a recruitment agency
| Module | Expected gain | Indicative cost |
|---|---|---|
| Mandate pipeline, shortlist, interviews, offer | Clear view per consultant | EUR 8,000 to 15,000 |
| Fee invoicing (18 to 25% of annual salary) | Invoice issued on offer acceptance | EUR 6,000 to 12,000 |
| Retainer and balance schedule (retained search) | Steadier cash flow | EUR 3,000 to 6,000 |
| Guarantee and replacement tracking | No forgotten replacements | EUR 2,000 to 5,000 |
| Enriched, deduplicated talent pool | 20 to 30% of candidates reused | EUR 6,000 to 14,000 |
| Client portal (shortlists, feedback) | Client feedback time halved | EUR 5,000 to 12,000 |
| Consultant commission dashboard | Variable pay without spreadsheets | EUR 3,000 to 6,000 |
UK GDPR requires a defined retention period for applications, often 2 years without contact: the ATS must purge records or request consent again automatically.
How to scope the project
Plan a 2-day workshop with 3 consultants and whoever handles invoicing, to map a mandate from signature to cash collection. The first release (pipeline, invoicing, guarantee, pool migration) costs EUR 30,000 to 40,000 and ships in 3 to 4 months. Require migration of the 40,000 records with deduplication, UK or EU hosting and code ownership.
Mini case study
Sophie, managing director of a recruitment agency in London (12 consultants, 300 placements a year), bills on average EUR 9,450 per placement (21% of a EUR 45,000 annual salary), i.e. EUR 2,835,000 in fees. An audit shows 1.5% of fees never invoiced or lost after poorly tracked guarantees: EUR 42,500 a year. Each consultant also loses 3 hours a week to re-keying, 1,620 hours a year; reinvesting a third of that in business development yields about 4 more placements, EUR 37,800. For a EUR 55,000 ATS plus EUR 8,000 per year, payback comes in about 9 months.
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
FAQ
How much does a custom ATS cost for a 12-consultant agency?
Budget EUR 30,000 to 70,000 depending on modules, then EUR 5,000 to 10,000 per year. A first release with pipeline and invoicing is around EUR 35,000.
Can we migrate our pool of 40,000 candidates?
Yes, migration with deduplication and normalisation usually costs EUR 3,000 to 7,000. Expect 10 to 20% duplicates removed from a pool that size.
Can the ATS invoice fees automatically?
Yes, the invoice is generated on offer acceptance using the mandate rate, 18 to 25% of gross annual salary. It can be sent to your accounting software by export or API.
How do we stay GDPR compliant with such a large pool?
The ATS applies a retention period, often 2 years without contact, then re-engages the candidate or deletes the record. Every consent is timestamped and retrievable on request.
How long until go-live?
Plan 3 to 4 months for the first release, then 2 months for the client portal. The switch ideally happens in July or August, a quieter period for agencies.
Let's scope your project. We price your ATS (pipeline, contingency invoicing, pool migration, budget of EUR 30,000 to 70,000, first release in 3 to 4 months) from your real mandates. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
