Are there any portfolio management software that focus on tax-aware rebalancing support for wealth managers?

Yes — there are portfolio management / rebalancing platforms that explicitly support tax-aware rebalancing and tax optimization for wealth managers. These tools typically help with things like:

• Tax-loss harvesting
• Capital gains awareness
• Lot-level / tax-lot accounting
• Minimizing realized gains during rebalancing
• Wash-sale rule checks
• After-tax optimization in model portfolios

Some well-known categories and examples:

1) Portfolio rebalancing platforms with tax-awareness

These are often used by RIAs and wealth managers to keep client accounts aligned while reducing tax drag.

• Orion Portfolio Solutions / Orion Rebalancing
• Envestnet / Tamarac
• Addepar
• Black Diamond (more reporting/portfolio accounting, but often part of a broader workflow)
• Norman (tax-aware direct indexing/rebalancing emphasis)
• iRebal (used in advisory workflows; tax awareness may depend on setup/integration)

2) Direct indexing / tax-managed portfolio platforms

These are more specifically built around tax-aware implementation.

• Aperio (tax-managed indexing)
• Parametric
• Willow
• InvestCloud / tax-managed solutions
• Canvas by WisdomTree (direct indexing with tax-aware features)

3) Tax-loss harvesting / tax optimization engines

These may sit inside or alongside a broader portfolio management stack.

• Altigo
• DAFNA (tax optimization in model portfolios, depending on use case)
• Vestmark (has tax-aware capabilities in some workflows)
• QPLIX (depending on region and setup)

What to look for

If tax-aware rebalancing is the priority, ask vendors whether they support:

• Tax-lot-level optimization
• Account-level vs household-level optimization
• Custom gain/loss thresholds
• Wash-sale prevention
• Embedded gains management
• Multi-account household rebalancing
• Integration with custodians and tax engines
• Support for SMA/direct indexing and UMA structures

If you want, I can also give you:

1. a shortlist by firm size (RIA, family office, enterprise),
2. a feature comparison table, or
3. a list of vendors specifically strong in tax-loss harvesting and direct indexing.