The verdict in three sentences
A Singapore agency running 120 corporate events a year that only learns its real margin 2 months after each conference is flying blind: an overrun missed during the project easily costs 2 to 4 margin points. Actual versus budget software tied to supplier purchase orders and client deposit invoices costs, as a 2026 order of magnitude, 70,000 to 120,000 SGD as a custom build, against 70 to 160 SGD per user per month for market tools. The realistic target is a margin known at day 7 and an alert as soon as a line exceeds its budget.
Why the margin arrives too late
A 250 person corporate retreat or conference involves 15 to 30 suppliers: venue, catering, AV production, hotel block, ground transport, entertainment, signage. Quotes change until the eve of the event, change orders arrive by email and supplier invoices land 30 to 60 days afterwards. Without a digital purchase order attached to each budget line, the project manager only sees the gap at accounting reconciliation.
Two Singapore specifics apply in 2026. GST at 9 % must be tracked per line, including on overseas suppliers for regional incentive trips. And InvoiceNow, the national Peppol e-invoicing network, is being phased in for GST-registered businesses, so the software should exchange invoices through an accredited access point.
| Event stage | Current practice | With the software |
|---|---|---|
| Budget | Spreadsheet per project manager | Template by event type, target margin shown |
| Supplier orders | Email and PDF quotes | Purchase order linked to a budget line |
| Change orders | Not tracked | Variance computed and approved by director |
| Client deposits (30 / 40 / 30 %) | Invoices keyed by hand | Schedule and automatic deposit invoices |
| Supplier invoices | Reconciled at day 60 | Matched on receipt, alert on variance |
| Final margin | Known 2 months later | Known at day 7, accruals for pending invoices |
Market tools or custom build: 2026 comparison
Event and MICE management platforms charge between 70 and 160 SGD per user per month. They handle attendee logistics well (registration, badges, rooming lists) but often stay weak on line-by-line actuals and on the link to accounting.
| Criterion (2026 order of magnitude) | Market tool (15 users) | Spreadsheets and accounting | Custom software |
|---|---|---|---|
| Upfront cost | 0 to 8,000 SGD setup | 0 SGD | 70,000 to 120,000 SGD |
| Annual cost | 12,600 to 28,800 SGD | 0 SGD | 9,000 to 15,000 SGD (hosting, maintenance) |
| Budget versus actual by line | Partial | Manual | Full |
| Supplier purchase orders | Rarely | No | Yes, with approval |
| InvoiceNow e-invoicing | Depends on vendor | Through accounting software | Access point connector |
| Time to go live | 1 to 2 months | Immediate | 4 months |
The 4 month timeline breaks down into 3 weeks of scoping on 10 recent events, 9 weeks of development, 2 weeks of migrating suppliers and budget templates, then 2 weeks piloting on 3 live events.
At Kolonell, this scope matches a medium to complex application: 4,000,000 to 7,000,000 FCFA (6,100 to 10,670 EUR) or 7,000,000 to 15,000,000+ FCFA (10,670 to 22,870+ EUR) depending on the modules fixed in the quote, with maintenance at 35,000, 75,000 or 120,000 FCFA (53, 114 or 183 EUR) a month. See our custom web applications page.
Mini case study
Wei Ling, managing director of a corporate events agency in Singapore, runs 120 events a year with an average budget of 140,000 SGD, or 16,800,000 SGD of revenue. Her 15 staff use a logistics platform at 110 SGD per user per month: 19,800 SGD a year. Each project manager spends 6 hours reconciling invoices after each event: 720 hours at 65 SGD loaded cost, or 46,800 SGD.
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By catching overruns before the event, the agency conservatively recovers 0.5 margin point on revenue: 84,000 SGD. Total gain: 19,800 + 46,800 + 84,000 = 150,600 SGD, minus 12,000 SGD running costs, or 138,600 SGD a year. For a build at 95,000 SGD, payback is 95,000 / 138,600 = 0.69 years, about 8 months.
FAQ
Does the software also handle attendee registration?
It is not its core: a market registration tool at 2 to 5 SGD per attendee is often cheaper. The custom build can connect to it to pull actual covers and room nights.
How are supplier change orders tracked?
Each change order creates a new purchase order version, showing the variance in SGD and margin points. Above a threshold, for example 2,500 SGD or 2 % of budget, the director approves.
Can overruns be recharged to the client?
Yes, variances caused by client requests are flagged rechargeable and feed a client change order. In practice, 30 to 50 % of overruns are recoverable when they are tracked.
Is the software ready for InvoiceNow?
It connects to the accredited Peppol access point chosen by the agency to send and receive invoices, in line with the IRAS phased requirements.
How many users should we plan for?
Custom software is not priced per user: 15 or 40 logins cost the same, only hosting and server load change.
Let's scope your project. We define with you budget templates, supplier purchase orders, the deposit schedule and the accounting link, with a pilot on your next events. 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.
