How to Read Your Brokerage Statement

DEFINITION

Cost Basis

The original price paid for a security, including commissions. When you sell, capital gain or loss is calculated as sale price minus cost basis. Accurate cost basis tracking is essential for tax reporting. Cost basis methods (FIFO, specific identification, average cost) affect how gains are calculated when you sell partial positions.

DEFINITION

Unrealized Gain/Loss

The theoretical gain or loss on positions you currently hold — the difference between current market value and cost basis. Unrealized gains are not taxed until you sell. A large unrealized gain represents a future tax liability if you plan to sell.

DEFINITION

Dividend and Capital Gains Distribution

Income paid to investors from stocks (dividends) or mutual funds/ETFs (capital gains distributions from fund activity). Both are taxable in the year received. Qualified dividends receive lower tax rates; ordinary dividends are taxed as income. Fund capital gains distributions can be taxable even if you didn't sell any shares.

The Parts Most Investors Ignore

Most people look at one number when they open a brokerage statement: the total value. Maybe the change from last period. Then close it.

The sections most investors skip contain information that directly affects tax decisions:

• Unrealized gains: your potential tax liability if you sell
• Cost basis by lot: which shares to sell to minimize gains or harvest losses
• Transaction history: unexpected activity (fund distributions that triggered gains you didn’t anticipate)
• Year-to-date income: dividends and interest that will appear on your 1099

Understanding your statement at this level takes 15 minutes per account. For someone with a significant taxable brokerage position, that 15 minutes can inform decisions that reduce tax bills by thousands of dollars.

The Account Summary

The account summary at the top of the statement shows:

• Total account value: Market value of all holdings plus cash
• Net change: Dollar and percentage change from prior period (usually monthly or quarterly)
• Year-to-date return: Return from January 1 through the statement date
• Asset allocation summary: Breakdown between equities, fixed income, cash, and other

The YTD return in your statement is typically the dollar-weighted return on your specific account, which accounts for cash flows. It may differ from a benchmark return or time-weighted return because the timing of your deposits and withdrawals affects the calculation.

Positions and Unrealized Gains

The positions section shows every security you hold: number of shares, current price, current value, cost basis, and unrealized gain or loss.

Why unrealized gain matters: If you hold a position worth $50,000 with a cost basis of $20,000, selling it generates $30,000 in taxable capital gains. At a 20% long-term rate, that’s $6,000 in tax. Knowing this before you sell lets you plan: maybe you harvest losses elsewhere to offset the gain, or you spread sales across tax years, or you donate appreciated shares to charity rather than selling.

Concentration check: The positions section lets you verify that no single holding represents an outsized percentage of your portfolio. If your employer stock from RSU vests has grown to 25% of your brokerage account, that’s visible here.

Cost Basis: The Tax Planning Lever

Cost basis is what you paid for your holdings. The gap between your cost basis and your sale price is your taxable gain.

Most brokerages default to FIFO (first in, first out) — when you sell, the oldest shares sell first. But you can often elect specific identification, which lets you choose exactly which lots you’re selling. This matters when you want to:

• Harvest losses: sell lots with a loss to offset gains elsewhere
• Minimize gains: sell the highest-cost lots (most recently purchased, typically) to minimize realized gain
• Manage holding period: sell lots held more than a year to qualify for long-term capital gains rates

Your brokerage statement shows the cost basis per lot. Your brokerage’s website or app shows the full lot detail. Knowing it before you sell is the prerequisite for using it.

Using Thalvi Alongside Your Statements

Thalvi aggregates your brokerage account positions into a single view across all accounts — so you can see your total unrealized gains across all brokerages, your total position sizes for concentration analysis, and your overall investment allocation without logging into each account separately. The statement-level detail for individual lots still lives in your brokerage platform; Thalvi provides the portfolio-level aggregation.