The verdict in three sentences
An SME that keys the same data twice (billing, payroll, then accounting) wastes time and multiplies errors. A custom integration between these systems removes double entry and makes the close reliable for SGD 15,000 to 35,000 in 2026. Typical result: around 35 hrs/month saved at close, 65% fewer reconciliation errors, a 3-6 week deployment and a 7-13 month payback.
Which flows to automate first?
Not all flows carry the same value. Automate first those that create the most re-keying and errors.
| Automated flow | Frequency | Time saved/month | Estimated build cost |
|---|---|---|---|
| Invoices → accounting | daily | 10-18 hrs | SGD 5,000-10,000 |
| Payroll → journal entries | monthly | 6-12 hrs | SGD 4,000-9,000 |
| Payments → reconciliation | daily | 5-10 hrs | SGD 6,000-12,000 |
| Expenses → payroll/accounting | monthly | 3-6 hrs | SGD 3,000-7,000 |
| Consolidated close reporting | monthly | 4-8 hrs | SGD 5,000-10,000 |
A full scope (billing + payroll + reconciliation) falls in the SGD 15,000-35,000 range depending on connector count and rule complexity.
Total 12-month cost and break-even
Beyond build, budget connector hosting and API maintenance. Here is a 2026 order of magnitude.
| Item | Estimated amount |
|---|---|
| Integration build | SGD 15,000-35,000 |
| Hosting/connectors (month) | SGD 400-1,000 |
| API maintenance (month) | SGD 500-1,100 |
| Team training (one-off) | SGD 1,000-2,000 |
| Labour savings (month) | SGD 1,800-4,000 |
With 35 hrs/month saved at SGD 45/hr loaded (SGD 1,575) plus avoided errors, the average investment is absorbed in 7 to 13 months.
Mini case study
Mei Ling, finance director of a 90-person services SME in Singapore, spends 40 hrs/month reconciling invoices, payroll and bank, with 8% of items needing correction. At SGD 45/hr loaded, that is SGD 1,800/month of time, before occasional late penalties. An integration at SGD 24,000 + SGD 900/month saves 32 hrs/month (SGD 1,440) and cuts discrepancies below 2.5%. Counting avoided errors, break-even arrives around month 10.
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FAQ
Do we have to replace our current software?
Not necessarily. Integration uses the APIs of your existing tools (billing, payroll, accounting). If a tool lacks an API, we use reliable imports/exports or a middleware module.
How long does deployment take?
Between 3 and 6 weeks depending on flow count: data mapping, connector development, reconciliation testing on a real close.
What if an API changes?
Monthly maintenance (SGD 500-1,100) covers API version tracking and quick fixes on changes, so the close never stalls.
How much error reduction is realistic?
About 65% fewer reconciliation errors, because data is entered once and consistency checks are automated.
Does it handle multiple entities?
Yes, consolidated multi-entity reporting is possible; it typically adds SGD 5,000-10,000 to the build depending on the number of companies.
Let's scope your project. List your billing, payroll and accounting software and your most time-consuming flows for a per-connector quote. 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.
