Automated Customer Account Transfer Service

What Is the Automated Customer Account Transfer Service?

The Automated Customer Account Transfer Service, commonly called ACATS, is the system used by many brokerage firms to automate and standardize transfers of customer accounts between firms. It helps move securities and cash from a carrying firm, the firm losing the account, to a receiving firm, the firm gaining the account.

ACATS matters because changing brokers should not require selling every position, mailing certificates, or rebuilding an account from scratch. The system supports in-kind transfers when eligible assets can move as they are, though some positions, account types, margin balances, or proprietary products may create delays or exceptions.

How ACATS Works

The customer usually starts by opening or identifying the receiving account and submitting transfer instructions to the new firm. The receiving firm enters the request. The carrying firm validates the account information, identifies assets, notes exceptions if any, and then moves eligible positions and cash through the standardized process.

A full transfer attempts to move the entire account. A partial transfer moves only selected assets. If the two accounts do not match by registration, account type, ownership, tax status, or other required information, the transfer may be rejected or delayed. Recent trades, options positions, margin loans, restrictions, or missing documentation can also complicate the process.

What Investors Should Watch

ACATS is operational, but the financial consequences can be real. An investor may be unable to trade positions during part of the transfer. Dividends, interest, residual cash, and trailing distributions may arrive after the initial transfer and need to sweep later. Cost basis information may transfer separately from the securities and can lag.

Fees also matter. The carrying firm may charge an account transfer fee. The receiving firm may reimburse it, but that is a brokerage policy, not a universal rule. Investors should check both firms before initiating the move.

When Problems Happen

Not every holding is ACATS-eligible. A mutual fund available only at the old broker may need to be liquidated or exchanged before transfer. Fractional shares are often sold and transferred as cash. Alternative investments, private placements, annuities, crypto assets, and employer-plan assets may follow different processes. Margin balances require special care because the new firm must accept or resolve the debt relationship.

The practical approach is to review positions before the transfer request. Knowing what can move in kind, what may be sold, and what tax consequences could follow prevents ugly surprises.

Taxable investors should be especially careful about liquidation during a transfer. If an asset cannot move in kind and is sold instead, that sale can create capital gains or losses. The operational convenience of changing firms should not accidentally become a tax event the investor did not intend.

Documentation matters too. Account titles, Social Security numbers or taxpayer IDs, trust documents, corporate resolutions, and beneficiary or custodial registrations may need to align. Many transfer delays are not market problems; they are identity, registration, or paperwork mismatches.

Investors should keep statements from both firms until the move fully settles. Those statements help verify positions, cash, pending dividends, residual sweeps, and cost basis after the transfer is complete.

The Bottom Line

ACATS is the main plumbing for brokerage account transfers. It makes account moves more standardized, but it does not make every asset portable. Investors should check eligibility, fees, tax effects, trading restrictions, and cost-basis transfer before pressing the button.