Professional Services

Best POS Systems for Engineering Firms

Engineering firms handle project-based billing with milestones, retainers, and reimbursable expenses. The right payment system manages complex invoicing while maintaining professional client relationships.

Common Challenges

Milestone-based billing
Retainer management
Reimbursable expense invoicing
Long project payment cycles
Multiple project tracking
Professional invoice appearance
ACH for large payments

Must-Have Features

  • Project-based invoicing
  • Milestone payment tracking
  • ACH bank transfers
  • Expense reimbursement billing
  • Professional templates
  • Payment reminders

Nice-to-Have Features

  • Time tracking integration
  • Project management sync
  • Client portal
  • Multi-currency
  • Detailed reporting by project

Frequently Asked Questions

How do engineering firms handle milestone billing?

Create invoices for each milestone as work completes. Track against total contract value. Most systems let you reference the original proposal/contract number for easy tracking.

Should we offer ACH payments?

Yes, especially for large invoices. ACH fees (0.5-1%) are much lower than card fees (2.6-3%). On a $50,000 invoice, that's $1,000+ in savings.

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