Schwab Advisors Gain Access to Syntax Custom Indexing

The new integration allows for automated, personalized index creation and tax-managed portfolios for individual accounts.

Updated on Oct. 21, 2026 in Investing

Isometric editorial illustration of a modular metallic linkage mechanism on a surface, representing integrated financial technology systems. — Syntax has integrated its index creation platform with Schwab Advisor Services' iRebal tool to streamline custom portfolio management for financial advisors. AI Illustration. Upload story photo >

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New York City-based fintech firm Syntax has integrated its index creation platform, Syntax Direct, with the Schwab Advisor Services iRebal rebalancing tool. This update allows financial advisors to streamline the construction and management of custom index-based model portfolios for their clients.

Why it matters

The integration addresses the demand for more efficient, personalized indexing by removing manual data handoffs between index design and portfolio management. This shift enables advisors to implement account-level customizations, such as tax management and fractional share adjustments, more seamlessly.

The integration links Syntax Direct into the iRebal platform, replacing previous manual workflows with a single automated process for index creation and portfolio management. Advisors can now link index rules directly to account-level tax and rebalancing features.

The players

Syntax

A New York City-based fintech firm that provides an index development and production engine for financial professionals.

Schwab Advisor Services

A division of Charles Schwab providing custody, trading, and technology solutions to independent financial advisors.

The details

By embedding Syntax Direct into Schwab's iRebal platform, the firms have automated the flow of index rules into portfolio rebalancing workflows. This allows advisors to manage custom indices that support account-level personalization and tax management without needing to manually transfer data between different systems. These custom indices can then function as model portfolios, applying automated rules for fractional shares and rebalancing directly to individual client accounts.

October 21, 2026: The integration between Syntax and Schwab Advisor Services was officially announced.

Money Landscape

This integration follows a trend of increasing automation in the wealth management industry, specifically regarding the scaling of personalized portfolios. It builds upon the existing capabilities of the iRebal platform, which advisors use to maintain target asset allocations for clients.

If you work with an advisor who uses Schwab, you may find it easier to request personalized indexing or tax-managed strategies for your account. Consult your financial professional to see if these new custom index tools align with your specific financial goals and tax planning needs.

The takeaway

The move enables more sophisticated, automated customization for individual client accounts through advisor-managed platforms. If you are interested in personalized indexing, ask your advisor how their current portfolio management software handles tax optimization and custom rule sets.