White-Label Accounting Support
Your senior staff is stuck in reconciliations. We take that off your plate.
We run the month-end close for your small clients — under your brand — so your team can focus on tax, advisory, and the work that actually makes you money.
White-label accounting for CPA firms serving e-commerce and real estate clients.
White-Label Delivery
Your brand. Our team. Invisible by design.
Structured Workflows
SOPs and automation built into every engagement.
Confidential Support
Discretion at every level, always.
US GAAP Compliant
Reporting delivered under US GAAP standards.
Services
Accounting support
where your team needs it
most.
Reconciliations
Bank reconciliations, credit card reconciliations, journal entries and AP/AR management — completed consistently on schedule.
Reduces errors and frees your team from routine verification work.
Month-End Close Support
Accruals, prepaids, deferred revenue, fixed assets and inventory/COGS — all executed on your timeline.
Structured close workflows delivered reliably each period.
Financial Reporting
P&L and Balance Sheet prepared under US GAAP, delivered by day 7–10 of each month.
Ready for client delivery without additional review burden on your team.
Bookkeeping & Back-Office Support
Full-cycle bookkeeping and recurring accounting operations managed with documented SOPs and automation.
Integrated as an extension of your firm — not an external vendor.
White-Label Accounting
Your firm. Your clients. Our team behind the scenes.
- Sierra operates under your firm's brand — never as a competing provider visible to your clients.
- We integrate into your existing systems, workflows and communication structure seamlessly.
- Your client relationship stays yours. Sierra handles the operational accounting behind the scenes.
- You add your margin on top. Your senior staff refocuses on tax, advisory and growth.
- Every engagement is confidential. Discretion is built into how we operate.
Client-facing brand & relationships
Structured accounting operations
Reconciliations · Close · Reporting
The end client experiences only your firm.
How It Works
Structured from the start.
Understand
Review the firm's workflows, responsibilities and support requirements.
Integrate
Align Sierra with the firm's systems, processes and communication structure.
Execute
Handle agreed recurring accounting workflows consistently each period.
Support & Scale
Adapt capacity as the firm's operational needs evolve.
Why Sierra
Built to strengthen your accounting operation.
Senior staff refocused on tax, advisory and growth. Operational accounting handled with structure, supervision and confidentiality.
White-label by design
Sierra operates under your brand. Your clients know only you.
US GAAP compliant
Reporting delivered under US GAAP — by day 7–10 of each month.
Reliable recurring execution
Consistent delivery each period with documented SOPs.
Supervised quality
A dedicated accountant reviews all work before delivery.
Process documentation
SOPs and automation built into every client engagement.
Remote & US time zone
Buenos Aires-based team operating on US time zone schedules.
Engagements
Built around your workflow.
Every accounting firm operates differently. Sierra structures support around your firm's responsibilities, workflows, volume and existing systems — not the other way around.
- Defined responsibilities aligned to your firm's scope and volume
- Flexible capacity that adjusts to your season and growth
- Integration with your existing workflows, tools and communication
- Long-term operational support — not short-term staffing
Track Record
Results
days
Month-end close reduced for multiple clients
accuracy
Reconciliation accuracy maintained across portfolios
clients
U.S. clients served remotely with a dedicated team
SAP
S/4HANA
Google LATAM implementation supported
Meet the Owner
Ariel Tonelli
Fractional Controller · Outsourced Accounting Team Lead
US GAAP Controller with over 8 years of experience in multinational finance. Ariel currently leads a remote accounting team from Buenos Aires, Argentina, operating on US time zones and serving 12 U.S. clients.
- Google: Led SAP S/4HANA implementation for LATAM — US GAAP compliance
- Charles Taylor InsureTech: Month-end close and financial reporting for UK subsidiaries
- Louis Dreyfus Company: Full-cycle accounting, reconciliations and process improvement
Sierra was built around a simple principle: accounting firms should be able to expand their operational capacity without sacrificing their client experience or brand. Every engagement is structured to be invisible to the end client.
Give your senior team more room to focus.
Build a structured accounting support operation behind your firm's brand.
Schedule a discovery call to discuss how Sierra can support your firm's accounting operations.
No commitment. Just a conversation to see if we are a fit.
FAQ
Frequently asked questions
How do you ensure confidentiality?
All work is covered by an NDA. Client data is never shared outside the engagement team, and we follow strict data handling protocols at every level.
What if I need more capacity one month?
We scale up or down based on your volume. You only pay for what you need. Seasonal peaks, audits or year-end do not require a new contract.
Can I test the service with one client before committing?
Yes. We recommend a 3-month pilot with 2–3 clients so you can evaluate quality and turnaround across at least two full reporting cycles before any broader commitment.
How is the work delivered under white-label terms?
All deliverables are formatted under your firm's brand. We operate as your back-office team. The client relationship, communication and brand identity remain entirely yours.
What types of clients are a good fit?
SMBs with consistent monthly transaction volume: service businesses, real estate entities, e-commerce companies, and inventory-based businesses. Multi-entity structures work well too.
When can my clients expect financial reports?
Our target is day 7–10 after month-end, depending on timely access to source documents and accounting systems. Specific timelines are confirmed during onboarding.
Which accounting systems do you work with?
Primarily QuickBooks Online, Microsoft Dynamics, Odoo and Excel-based environments. Other systems are evaluated case by case during the pilot discussion.