For most investors, a losing trade is a bitter pill. Yet a growing segment of the wealth management industry is turning losses into a strategic asset. Tax-loss harvesting, once a niche tactic, is now a cornerstone of sophisticated portfolios, and the numbers behind it are staggering.
Charles Schwab's third-quarter earnings, released on October 15, revealed a dramatic surge in margin lending. As of September 30, margin loans stood at $187.9 billion, a 93% jump from $97.2 billion a year earlier. Of that total, $60.7 billion was tied to specific long-short strategies used by investment advisers. These figures don't measure the entire tax-loss harvesting industry, but they underscore how deeply leverage has become intertwined with these strategies.
The appeal for asset managers is clear: tax benefits attract wealthy clients, and the structure of these portfolios can make them sticky. But the strategy is not without its tensions. Borrowing costs, complex exit decisions, and market risks can overshadow the tax advantages.
How Long-Short Strategies Generate Losses
Traditional tax-loss harvesting involves selling depreciated assets to offset capital gains. Long-short strategies expand the playbook. Managers buy stocks they expect to rise and short-sell those they expect to fall. If a shorted stock rises, the position loses value, and closing it can realize a loss—potentially in a rising market. This allows managers to harvest losses while maintaining exposure to favored investments.
Consider a simplified portfolio with $50,000 in unrealized gains and $30,000 in realized losses. The portfolio is up $20,000 overall, yet the manager has realized $30,000 in losses. If those losses offset taxable gains elsewhere, at a 20% tax rate, the investor saves $6,000 immediately. This illustrates why a profitable portfolio can still produce valuable losses.
Limits and Risks
However, the strategy has boundaries. Under US tax rules, net capital losses exceeding gains can offset only $3,000 of ordinary income annually ($1,500 for married filing separately), with unused losses carried forward. The IRS wash-sale rule disallows losses if substantially identical securities are bought within 30 days before or after the sale. Tax straddle rules further complicate long-short arrangements.
More fundamentally, a lower tax bill today often means deferred taxation, not elimination. The financial industry earns fees while gains remain unrealized, creating a powerful incentive to keep clients invested.
Why Managers Love It
Zachary Milam, vice president at Mercer Capital, notes that the fees themselves aren't exceptional. "The fees themselves are nothing special," he told Invezz. "Asset managers have charged that much and more for decades." The real draw is the perceived value. A tax reduction is tangible, even if the long-term economic benefit is murky. For managers, this creates a service that appears more concrete than traditional performance.
Operationally, the model scales well. "The cost side scales at least as well as most of asset management, because the heavy lifting is software rather than research," Milam said. Technology enables firms to monitor portfolios and identify losses across numerous accounts, making recurring fees attractive as assets grow.
The opportunity extends beyond portfolio managers. Advisers collect management fees, while brokers, custodians, and securities-lending providers earn from financing and short sales. Schwab's disclosures highlight this: alongside the $60.7 billion in margin loans, the company reported $63.3 billion in related short credits for September—distinct from borrowing.
As this industry grows, investors must weigh the tax benefits against the costs and risks. The strategy is not a guaranteed win, but for many wealthy Americans, paying Wall Street to realize losses is becoming a calculated move.
This article is for informational purposes only and does not constitute financial advice.
