BackOfficePortal
SEI Trust 3000 Reconciliation
For a number of years CSSI Solutions had provided reconciliation services to a SEI Trust 3000 customer who...
Jan 21, 2026
Service
Back-office services for reconciliation, reporting, and investment operations
Since 2004, CSSI has provided back-office services for financial advisory firms that need help with reconciliation, trade support, reporting workflows, corporate actions, and daily operational cleanup. Some firms use us for overflow support. Others bring us in when the in-house workload is no longer sustainable.
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BackOffice Overview
Expert support for your investment operations
With experience in multiple systems ranging from Advent Axys / APX / Black Diamond, PortfolioCenter, Tamarac, Orion, and much more; CSSI takes pride in our ability to meet our client's ever evolving needs. Through encrypted connectivity our BackOffice team is able to immediately provide temporary, specialized, or permanent services remotely ensuring your business operations continues and your client data is secure.
What Do CSSI's BackOffice Services include?
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Daily Reconciliation & Processing
Learn more on the related page.
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Performance & Composite Maintenance
Learn more on the related page.
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Client & Reporting Services
Learn more on the related page.
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Partnership Accounting
Support is tailored to the workflow and reporting needs of each firm.
Have questions about our BackOffice services? Check out our .
Daily Reconciliation & Processing
Our standard client procedure includes comprehensive daily reconciliation and processing services to ensure accurate and timely management of your portfolio data.
Data Management
- Download & Translate Data
- Setup Accounts & Securities
- Correct & Post Activity
- Reconcile Accounts
- Data Updates (Prices, Securities, Indexes)
Corporate Actions
- Process splits, spinoffs, mergers
- Income Accruals (dividends, interest, paydowns)
- Dividend Reclassification
- Step-ups
- Wash Sales
Reconciliation
- Trade Settlement (Process Confirms & Affirms)
- Market Value Reconciliation
- Cost Basis Reconciliation
- Paper Statement Reconciliation
- Automation (macros, scripts, programs)
CSSI Reconciliation Services
T+1 Processing & Notification Services
Streamline your end-of-day with our T+1 Notification Service. This partially automated workflow combines automation with human review and typically takes about one hour per day outside normal business hours.
It helps firms send timely, accurate, and compliant notifications while reducing manual effort.
It is built for reliability, flexibility, and cleaner daily processing.
End of Day - T+1 Processing:
This service handles the end-of-day T+1 process for bank notifications with a mix of automation and manual review. Most firms can complete it in about an hour outside normal business hours.
Key features include:
- T+1 Processing: Notifications are prepared and sent on the next business day after the transaction or data pull.
- Automation: Repetitive tasks such as data aggregation, formatting, and scheduling are automated where possible.
- Review and Exceptions: A team member still reviews output, handles exceptions, and approves final delivery when needed.
- Time Efficiency: The process is designed to take about one hour per day and can run outside regular business hours.
- Reliability and Accuracy: The workflow supports timely delivery while leaving room for manual adjustments when a case needs extra attention.
Performance & Composite Maintenance
Maintain accurate performance reporting and ensure compliance with industry standards through our comprehensive performance and composite services.
Data Validation & Performance
- Ensure system data accuracy using proprietary tools
- Update performance per firm's standard procedures
- Research and troubleshoot performance outliers
- Communicate necessary fixes
Composites & GIPS
- Maintain membership based on firm policies
- Assist with GIPS compliance standards
- Work directly with client or verifier
- Ensure timely delivery of all deliverables
Client & Reporting Services
Streamline your client management and reporting processes with our comprehensive service offerings designed to enhance efficiency and accuracy.
1
New Account Setup
Comprehensive account setup including processing paperwork, setting up accounts in portfolio management systems, managing client information, handling transfers, delivering assets, and updating entities, groups, and composites.
2
Data Audit
Act as an independent party to review data, confirm no irregularities exist, and address any issues that arise to ensure data integrity.
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Month-end Reporting
Automate reporting processes while running, reviewing, troubleshooting, and saving both internal and client reports to ensure timely delivery.
4
Client Invoicing
Run either parts of or the complete invoicing process according to your firm's defined procedures to ensure accurate and timely billing.
Partnership Accounting
Comprehensive partnership accounting services designed to handle the complexities of fund management and investor reporting with precision and efficiency.
Monthly Services
- •Reconciliation of Axys/APX system to Advent Partner system and custodial statements
- •Maintenance of fund accounting within Advent Partner
- •Maintenance of fund data in Quickbooks
Client Services Assistance
- •Wire Letter Preparation
- •Preparation & distribution of monthly statements of capital from Advent Partner
Annual Services
Bringing in Advent Partner fund information onto Advent Partner Tax Forms platform
Preparation of K-1's using Advent Partner Tax Forms
Assisting with annual audits
Frequently Asked Questions
Common questions about CSSI's BackOffice outsourcing services
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Benefits of BackOffice Outsourcing
What are the benefits of outsourcing our BackOffice operations to CSSI?
A
Firms usually come to us for steadier deliverables, deeper operational expertise, and a more cost-effective support model. Our BackOffice outsourcing helps reduce operational risk while improving day-to-day efficiency.
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Ideal Timing for BackOffice Outsourcing
When should I consider outsourcing our BackOffice operations?
A
If your firm is dealing with staff turnover, contact us early. CSSI often steps in when team members retire or leave, helping firms cover operational gaps and maintain continuity without disrupting clients.
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BackOffice Outsourcing Costs
What is the typical cost involved in outsourcing our BackOffice work to CSSI?
A
BackOffice processes vary by firm, so pricing depends on the complexity of your workflow. Even with custom pricing, CSSI aims to keep rates competitive by using years of experience and internal tools to work efficiently.
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BackOffice Transition Timeline
How long does it take to transition our BackOffice operations to CSSI?
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Timelines vary, but a typical transition takes one to two weeks. It can move faster when there is a dedicated point of contact, current documentation, and scheduled training with your operations team.
Additional Questions
Service Scope Flexibility
Does CSSI handle complex, time-sensitive BackOffice tasks?
CSSI can tailor BackOffice services to fit your process, including more complex or time-sensitive work.
Operating Hours
What are CSSI's BackOffice service hours?
We align our schedule with NYSE market hours and holidays. Our BackOffice team typically works from 7:00 AM to 4:00 PM EST so market-related tasks can be handled on time.
Data Security
Will client data be stored on CSSI's network?
No. CSSI performs operations remotely on your system, so client data does not need to live on our network. If a project ever requires data transfer, it only happens with formal authorization.
Common back-office paths
Most teams start with the broader operations view, then narrow into APX reconciliation, APX SSRS reporting support, or Axys migration depending on where the operational pressure is landing.
BackOffice Insights
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Need help with reconciliation or back-office workload?
CSSI can help if your team needs operational support, cleanup work, or steadier reporting workflows.
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