Outgrowing Xendoo? Get Bookkeeping, Payroll, and Tax in One Fixed Price.
Bookkeeping. Payroll. Bill Pay. Tax compliance. Financial Reporting. One team. One fixed price. Built for consulting firms.
No contracts.
No commitment.
9.5/10
NPS Score
300+
Clients Served
Since 2009
15+ Years
50% +
From Referrals
Don't Just Take Our Word For It
We've served 300+ consulting firms since 2009. Here's what they have to say.
9.5/10 NPS Score • 50%+ Clients from Referrals • 15+ Years in Business
"Part of Our Team—Not Just a Vendor"
⭐⭐⭐⭐⭐
"System Six is an essential part of the success of our business. They're trustworthy, responsive, and knowledgeable. They feel like part of our team, not just a faceless third-party vendor. I've referred many other entrepreneurs to them because they actually care about your success."
Rachel,
Professional Services Firm Owner
"I Delegate Everything—They Handle It All"
⭐⭐⭐⭐⭐
"I can delegate all bookkeeping, payables, receivables, tax preparation, projected budgeting, and monthly financial reporting over to them. They work with my CPA directly so all I have to do is review and approve. I don't want to run my business without them and neither should you."
Ann D.,
Business Owner (Yelp Review)
"Best Decision I Made"
⭐⭐⭐⭐⭐
"Hiring them was the best decision I made at the start of the business. They've crushed it and have done wonders for my stress level to feel like this is all now taken care of with a professional partner."
Orlan,
Acquisition Entrepreneur
"Dramatically Easier"
⭐⭐⭐⭐⭐
You have made our lives dramatically easier since you started helping us. We've been extremely impressed with how knowledgeable, thorough, thoughtful, and detailed you are."
Mari,
Consulting Principal
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Is your financial back office holding you back?
The Three Problems That Keep Consulting Firm Owners Up at Night
PROBLEM #1
Generic Providers Who Don't Get Consulting
You started with Xendoo for bookkeeping. Then came the add-ons: tax filing is extra, CFO guidance is extra, payroll runs through a separate provider, expenses through another app. Now your “affordable” solution costs more than a full-time hire.
- Bookkeeping is one subscription, tax filing is another add-on
- Payroll requires a completely separate platform
- Expense management? That’s yet another tool and login
- Reports take days because data lives in five different places
The cost:
You’re paying premium prices for a patchwork system that was never built to handle how consulting firms actually operate.
PROBLEM #2
The Vendor Juggling Act
Your financial operations are scattered across platforms — and nobody’s connecting them.
- One provider handles monthly bookkeeping (on their timeline, not yours)
- A separate platform runs payroll with its own fees and login
- Your CPA shows up once a year, missing all the context
- You’re still chasing invoices and managing bill pay yourself
- Nobody is connecting the dots across platforms
The cost:
When something falls through the cracks — a missed 1099, a payroll error, an unexpected tax bill — everyone points fingers except at themselves. And you’re stuck being the project manager for your own finances.
PROBLEM #3
The Compliance Anxiety That Never Goes Away
The compliance anxiety doesn’t stop just because you’re paying for bookkeeping:
- Did our provider actually file quarterly taxes on time?
- Are all our 1099 contractors properly classified?
- What happens if we get audited and none of these systems sync?
- Is our multi-state sales tax situation even compliant?
The cost:
Mental bandwidth you could be using to grow your firm, wasted on wondering whether your “affordable” bookkeeping solution actually has the expertise to keep a consulting firm compliant.
Here's the thing:
You didn't build your consulting practice to manage vendors, chase paperwork, or lie awake wondering about tax deadlines.
There's a better way—and it starts with having one team that handles everything.
Why Consulting Firms Switch to Us
Xendoo
Base + tax + CFO + payroll add-ons
Accrual accounting only on premium tiers
Limited connections per tier
Ecommerce, franchise, SMB focus
Limited track record with consulting firms
System Six
Everything in one fixed weekly fee
Accrual-based on all engagements
No limits on connected accounts
100% focused on consulting firms
Serving consulting firms since 2009
One Team. One Price. Everything Included.
$400-800/week • No add-ons • No contracts
BOOKKEEPING
- Full accrual accounting
- Bank reconciliation
- Financial reporting
- QuickBooks Online mgmt
PAYROLL & AP/AR
- Payroll processing
- Bill pay & vendors
- Invoicing & collections
- 1099 preparation
TAX & COMPLIANCE
- Sales & use tax filings
- Year-end tax support
- CPA coordination
- Controller oversight
Quick Answers
Can you fix our past mess?
→ Absolutely. We specialize in catch-up bookkeeping. Whether you're 6 months behind or 2 years behind, we'll reconstruct your records, reconcile everything, and get you current—typically within 4-8 weeks depending on how messy things are. We've seen worse than whatever you've got, promise.
How fast can you start?
→ Most clients are fully onboarded within 2-3 weeks. Week 1: We audit your current setup and identify what needs fixing. Weeks 2-3: We clean up the backlog and take over your ongoing bookkeeping. By week 4, you're getting monthly financials without lifting a finger.
Do you work with our CPA?
→ Yes, and they'll love us for it. We provide your CPA with organized, accurate, reconciled books that make tax prep faster and easier. Many of our clients come from CPA referrals because we reduce their workload. We coordinate directly with your tax preparer so you don't have to play middleman.
If you’re not fully happy with your current tax partner, we can help too by serving you with our fantastic in house tax team. They'll coordinate directly with our bookkeeping team and make for a seamless relationship for all of your finance and tax needs.
What if we're already using QuickBooks?
→ Perfect. We work in your existing QuickBooks Online file—no need to start over. We'll audit your current setup, fix any categorization issues, clean up your chart of accounts, and take over from there. If you're on QuickBooks Desktop, we can migrate you to QuickBooks Online as part of onboarding.
Do you handle both W-2 employees and 1099 contractors?
→ Yes. We track both, ensure proper classification (important for IRS compliance), and handle all the reporting requirements. At year-end, we prepare your 1099-NECs and W-2s on time. For consulting firms with lots of 1099 contractors, this alone saves you 10+ hours every January
Can you track project profitability?
→ Basic bookkeeping tracks your overall revenue and expenses. If you need project-level profitability (which many firms do), we can absolutely do it. We set up class/location tracking in QuickBooks to give you visibility by client or project, and we can also build deeper profitability reports that include labor costs and allocations.
We’re happy to provide full project-level profitability tracking — it just comes at an additional cost.
Can you help us get ready for an audit or due diligence?
→ Yes. We provide audit-ready books with full documentation, proper accrual accounting, and organized supporting records. If you're preparing for financing, acquisition, or investor due diligence, we can work with your auditors directly and provide everything they need.
