We Own Your Month-End

Project-based bookkeeping for engineering firms

Close by Day 5, WIP by Day 7, so your PMs can focus on delivery.

The Miller Guarantee

We credit 20% of your fee if we miss the Miller Guarantee:

  • Bank reconciliations and closed books by Day 5 every month.

  • Accurate WIP by Day 7 every month.

  • Responses within 24 hours.

Miller Bookkeeping Specializes in Engineers and Consultants

Miller Bookkeeping helps engineering firms and solo consultants keep clean, project-based books. We value accuracy, clarity, speed, and practicality. We solve problems like late month-ends, messy WIPs, and cash crunches.

Based in Tampa, FL. Serving nationwide. Family owned and operated.

  • We focus exclusively on engineering firms and consultants—civil, structural, MEP, geotech. That means we speak your language: WIP, job costing, retainage, and progress billing aren’t add-ons for us—they’re the core of what we do.

  • We design your chart of accounts and job structure to deliver reports your PMs actually use. You’ll see real-time utilization, project profitability, and cash-flow insights tied to each job and phase.

  • No hourly surprises. Every plan is a flat monthly price, reviewed quarterly, so you always know your costs.

  • We deliver reconciled books and a clean WIP schedule each month—on time, every time—so you can make confident decisions and bill accurately.

  • You’re not a ticket in a queue. Work directly with the Millers to get quick answers, responsive support, and proactive recommendations.

  • Based in Florida, we work with engineering firms across the U.S. using secure cloud accounting tools and easy client portals.

Pricing for Engineering Firms

Flat monthly bands tied to complexity — and we own your month-end (WIP by Day 7).

Solo Consultant

$499/mo
Best for one-person shops
  • Monthly Reconciliation (2 Accounts)
  • Transaction Entry & Categorization
  • Receipt Capture
  • Tax-ready books for CPA
  • W-9 Entry of 1099 Vendors
  • Monthly P&L and Balance Sheet
Book a Fit Call

Small Team

$999/mo
For teams requiring Job Costing
  • Monthly Reconciliation (3 Accounts)
  • Job Costing (5 Jobs)
  • Invoice Creation (10 Invoices)
  • AR & AP Tracking
  • Previous Tier's Features
Book a Fit Call

Growing Firm

$1,999/mo
For teams requiring WIP Management
  • Monthly Reconciliation (5 Accounts)
  • Job Costing (10 Jobs)
  • Invoice Creation (20 Invoices)
  • WIP Tracking
  • Revenue Recognition (T&M / Fixed-Fee)
  • Progress Billing / Retainage Tracking (AIA / T&M / fixed-fee)
  • Previous Tier's Features
Book a Fit Call

Scaling Firm

Available!
For teams requiring in-depth forecasting
  • Monthly Reconciliation (5+ Accounts)
  • Job Costing (10+ Jobs)
  • Invoice Creation (20+ Invoices)
  • Monthly Insights Call
  • KPI Dashboard
  • Forecasting & Cash Flow Projections
  • Previous Tier's Features
Book a Fit Call

Prices are starting points; final scope depends on accounts, transaction volume, and number of active jobs.

Frequently Asked Questions

Do you replace my CPA or tax preparer?

No. We work alongside your CPA. Miller Bookkeeping runs your monthly books, WIP schedules, and project-level reporting so your CPA can focus on taxes and compliance.

Can you start mid-year or mid-month?

Yes. We’ll perform a catch-up close to get you current, then roll into our normal Day-5 close / Day-7 WIP rhythm.

What industries do you specialize in?

We focus exclusively on engineering, architecture, and consulting firms with project-based work. This lets us deliver accurate WIP, revenue recognition, and project P&L reporting tailored to your needs.

What software do you support?

We work with QuickBooks Online and common engineering firm toolchains. If you’re using different systems, we’ll review during onboarding to make sure we can support them effectively.

How is pricing adjusted if our workload changes?

Our plans are flat-rate and scoped at onboarding. We review quarterly based on active jobs, accounts, and transaction volume to make sure the scope matches your firm. No surprise overages.

What if you miss your service commitments?

We guarantee Day-5 close, Day-7 WIP, and 24-hour response times. If we miss, we credit 20% of your monthly fee—no questions asked.

Can you handle AR/AP, billing, or retainage?

Yes. For Growing and Scaling plans, we manage invoicing, AR/AP workflows, and revenue recognition—including retainage support and T&M/fixed-fee billing.

We Keep Your Books Useful

From basic bookkeeping to project-level insights, here are the four issues we solve most often.

Problem Our Fix Result
Books are messy or months behind Catch-up & cleanup: reconcile accounts, remove duplicates, re-map categories, and get everything current.
  • Backlog reconciliations
  • Account cleanup
  • Receipt matching
 Clean, up-to-date books — ready for tax prep or growth.
Invoices go out late; cash flow is unpredictable Prep and send invoices on schedule, add follow-ups, and track payments so you’re not chasing money.
  • Invoice prep & reminders
  • Payment tracking
 Invoices sent on time; payments come in faster and steadier.
Month-end drags on; reports arrive too late Standardize close tasks, automate receipts/time entries, and enforce a Day-5 close.
  • Close checklist & ownership
  • Automated receipt capture
 Month-end done in days, not weeks — reports you can actually use.
No clear view of which projects make money Build job-level P&Ls, align revenue recognition, and roll up into a simple KPI dashboard.
  • Project profitability reports
  • 5–7 KPI dashboard
 You see which jobs win — and fix the ones that don’t.

Whether you just want your books current or need real-time visibility, we’ll meet you where you are.

Book a 15-Minute Fit Call

Chat with the Millers.

Interested in hearing more?
Please complete the form below with a few details about your firm. We’ll review your information and follow up promptly to schedule a brief consultation.