The verdict in three sentences
For a New York company with 300 traveling employees, tools like Expensify or Ramp's paid tiers cost USD 9 to 15 per user per month, or USD 32,000 to 54,000 a year. A custom expense management app costs USD 45,000 to 80,000 to build and pays off in 18 to 24 months, provided your client rebilling rules are genuinely specific. If your expenses follow a standard policy, stay with an off-the-shelf tool: it does the job very well.
What off-the-shelf tools cost for 300 users
Expensify and Ramp cover the essentials: receipt capture, OCR, IRS mileage rate, approval workflows, export to QuickBooks or NetSuite. The limits show when every expense must be assigned to a client, a project and a different rebilling rate.
| Line item (300 users) | Expensify or Ramp (2026 estimate) | Custom app |
|---|---|---|
| Licences or annual subscription | USD 32,000 to 54,000 | USD 0 |
| Initial build | USD 0 | USD 45,000 to 80,000 |
| Setup, accounting integration | USD 4,000 to 10,000 | included |
| Annual hosting and maintenance | included | USD 8,000 to 12,000 |
| Client-specific rebilling rules | manual workarounds | native |
| 3-year cost (mid-range) | ≈ USD 136,000 | ≈ USD 92,500 |
This assumes a stable headcount. If your traveling workforce grows 20 %, the gap widens further, because custom cost does not scale with users. Note that Ramp's base tier is free when you use its corporate card; the comparison above applies if you keep your existing cards or need advanced workflows.
Features to plan and their cost
A custom app does not need to reinvent everything. OCR relies on a specialised API, and the accounting export follows your system's format (QuickBooks, NetSuite, Sage Intacct).
| Module | 2026 range (USD) | Detail |
|---|---|---|
| Mobile capture app (iOS, Android) | 12,000 to 20,000 | Photo, offline entry, optional geolocation |
| Receipt OCR | 5,000 to 9,000 | Amount, tax, date, vendor extracted automatically |
| Client and project rebilling rules | 8,000 to 16,000 | Rate per client, caps, billable or not |
| Multi-level approval workflow | 5,000 to 9,000 | Manager, controller, CFO above a threshold |
| Mileage and per diem | 3,000 to 5,000 | IRS 2026 mileage rate, GSA per diem for NYC |
| Accounting and payroll export | 5,000 to 9,000 | Journal entries, sales tax, payroll reimbursements |
| CFO dashboard | 4,000 to 7,000 | Spend by client, by team, anomalies |
| Discovery, testing, go-live | 3,000 to 5,000 | Workshops, acceptance, training |
| Total | USD 45,000 to 80,000 | Timeline: 3 to 5 months |
Compliance matters too: the IRS accepts digital receipt images as records, provided they are legible, complete and retained for at least 3 years (up to 7 depending on circumstances).
The productivity gain: half an FTE
Today, with a poorly fitted tool, the finance team recalculates the billable portion of each report by hand. With 2,500 reports a month, 2 minutes of rework each adds up to 83 hours a month, about 0.5 FTE. At USD 85,000 fully loaded for a staff accountant in New York, the gain reaches USD 42,500 a year, before counting avoided rebilling errors.
Mini case study
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Rachel, CFO of a New York facilities maintenance company with 300 field technicians, pays USD 12 per user per month, or USD 43,200 a year, and her team reworks billable expenses for 40 commercial clients every month. She picks a custom app at USD 62,000 plus USD 10,000 a year in maintenance. Annual saving: USD 43,200 in licences + USD 42,500 in accounting time - USD 10,000 maintenance = USD 75,700 a year. Payback in about 10 months. Bonus: 1.5 % of previously forgotten expenses are now billed to clients.
FAQ
Can we keep Expensify or Ramp and add rebilling only?
Yes, through their export APIs: an add-on module at USD 13,000 to 24,000 applies your rebilling rules. This is the right call under 150 users.
Is OCR reliable on restaurant and toll receipts?
Current engines correctly read 90 to 95 % of receipts. The employee confirms or corrects in a few seconds.
Do receipt photos replace paper originals?
Yes, under IRS rules, if the images are legible and complete and stored securely for the required retention period.
How long to roll out the app?
Allow 3 to 5 months, including a 4-week pilot with 20 to 30 field employees before full rollout.
Can employees submit expenses without signal?
Yes, the mobile app stores reports offline and syncs when the connection returns, useful for technicians in basements and subway-level sites.
Let's scope your project. We price your custom expense management app or a rebilling module plugged into your current tool, with an indicative budget, timeline and pilot plan. 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.
