Join a team where data rigor meets real‑world impact in global Securities Services. As a US Tax Withholding Associate, you’ll turn complex IRS rules into precise, audit‑ready outcomes—driving accurate withholding, airtight controls, and year‑end reporting at scale. Partner across Tax, Technology, and Client Service to automate data quality, resolve cross‑border scenarios, and reduce risk for clients across asset classes.

The US Tax Withholding Associate supports end-to-end withholding and information reporting for US source income across Securities Services client accounts, with a heavy focus on manipulating and validating large, complex data sets to ensure accuracy and strong control outcomes. The associate will apply IRS Chapters 3 and 4 rules, review tax documentation (W‑8/W‑9), execute withholding and deposits, and support year-end reporting (1042‑S/1099). Success in this role requires exceptional attention to detail, rigorous adherence to control procedures, and comfort working with high-volume transactional data.

Job responsibilities:

• Extract, transform, and reconcile large data sets from custody, tax engines, and documentation systems; build repeatable workflows that enhance data quality and lineage.

• Perform data validations, outlier detection, and exception handling across high-volume income events and client populations; document assumptions and control evidence.

• Calculate and apply US nonresident (Chapter 3) and FATCA (Chapter 4) withholding on US source income events across asset classes and account types, ensuring rate accuracy per documentation and treaty eligibility.

• Reconcile withholding accruals versus remittances; support timely federal tax deposits and payment processes; maintain audit-ready trails for all adjustments and exceptions.

• Support preparation and quality control for Forms 1042‑S, 1099, and 1042, including data validation, corrections, and amendments; manage high-volume file generation and reconciliation checkpoints.

• Execute year-end and interim reporting timelines with precision, ensuring reconciled totals, error-rate thresholds, and complete audit trails.

• Execute daily control checks, tolerance-based reconciliations, and root-cause analysis; raise issues promptly and drive remediation with documented evidence and sustainable fixes.

• Maintain and enhance SOPs/runbooks, embedding preventive and detective controls in data workflows.

• Partner with Client Service, Tax Product, and Technology to resolve client queries and complex withholding scenarios; communicate data-driven findings clearly and succinctly.

• Translate regulatory/tax requirements into operational steps and control points; support UAT and production validation for tax engine and documentation platform changes.

Required qualifications, capabilities and skills:

• Bachelor’s degree in Accounting, Finance, Business, Economics, Data/Information Systems, or related field; or equivalent experience.
• 2+ years of experience in securities services, custody, fund administration, broker-dealer, or financial operations with a focus on US tax withholding and information reporting in data-heavy environments.
• Ability to handle large, multi-source data sets with strong data hygiene.
• Experience with data reconciliation techniques; familiarity with SQL or similar tools
• Working knowledge of US withholding tax rules (Chapter 3), FATCA (Chapter 4), treaty benefits, and US forms (W‑8 series, W‑9), plus information reporting (1042‑S, 1099, and 1042 basics).
• Exceptional attention to detail and commitment to controls; proven track record reducing errors and improving data quality at scale.
• Strong analytical and problem-solving skills; ability to manage peak cycles and multiple deadlines.
• Excellent written and verbal communication; can articulate complex, data-driven conclusions to non-technical stakeholders.

Preferred qualifications, capabilities and skills:

• Experience with tax documentation tools, withholding/tax engines, and custody platforms; familiarity with control frameworks in financial operations.
• Exposure to corporate actions income processing, interest/dividend events, and cross-border tax topics.
• Prior experience supporting audits, issue management, and remediation programs in regulated environments.
• Certifications: IRS Enrolled Agent, CPA, or equivalent exposure to US tax (nice to have).

Core Competencies

• Data Rigor and Quality: Designs and follows controls that ensure data completeness, accuracy, and traceability; documents logic and evidences results.
• Risk and Control Mindset: Adheres to procedures, rapidly escalates/control-breaks, and delivers durable remediation with metrics.
• Ownership and Execution: Manages throughput and timeliness across monthly/quarterly/year-end cycles; prioritizes based on risk and client impact.
• Collaboration: Coordinates across operations, tax advisory, client service, product, and technology to resolve issues and implement improvements.
• Continuous Improvement: Identifies automation opportunities; contributes to UAT and post-implementation validation; modernizes SOPs and data checks.