Bitcoin bought with 1,000USDT can rise 10%, while profit after both fees is about 97.80USDT in this example. A 10% price gain and your approximately 9.78% net return are different numbers. Attaching quantity, valuation and realized profit to one trade makes “how does continuing to buy make money?” a more concrete question.
What must increase after the first purchase?
A first-Bitcoin question on 4 October also asks how continuing to buy makes money. A purchase creates a holding, but adding money to increase its valuation differs from making investment profit. This article assembles the terms needed to read a first trade through one calculation.
Quantity is how much BTC you hold; price is the amount of another asset exchanged for one BTC; valuation is holding quantity × that price. The quote currency here is USDT, not an assumption of identical cash dollars or won. Record the amount contributed and later deposits or withdrawals separately in the same currency so that contributions do not masquerade as returns.
A purchase fee can reduce the coins received
Bybit's spot fee explanation deducts fees from the purchased asset: BTC when buying BTC, and USDT when selling BTC for USDT. Check the applicable regional and account rate. The illustration applies the document's 0.1% spot baseline on both legs.
Assume all 1,000USDT is spent at a BTC fill price of 100,000USDT, then the whole holding is sold at 110,000. Every execution fills at those prices. Exclude other cashflows, spread, tax, withdrawals and conversion costs. These are neither actual quotes nor trading results.
| Initial purchase item | Calculation | Quantity or payment |
|---|---|---|
| USDT paid | Initial contribution | 1,000USDT |
| BTC before fee | 1,000÷100,000 | 0.01BTC |
| Purchase fee | 0.01×0.1% | 0.00001BTC |
| BTC actually received | 0.01−0.00001 | 0.00999BTC |
Bitcoin.org's unit explanation gives 100 million sat per BTC. The 0.00999BTC actually received equals 999,000sat. Recording the USDT payment but the pre-fee 0.01BTC as your holding overstates valuation from the start.
The displayed gain and net profit after selling
At the assumed price of 110,000, valuation is 0.00999×110,000=1,098.9USDT. That is 98.9 above the 1,000 contribution, before a sale. This unrealized gain does not deduct the future sale fee.
| Following through to the sale | Calculation | Result |
|---|---|---|
| Price return | 110,000÷100,000−1 | +10% |
| Valuation before sale | 0.00999×110,000 | 1,098.9USDT |
| Sale fee | 1,098.9×0.1% | 1.0989USDT |
| USDT received after sale | 1,098.9−1.0989 | 1,097.8011USDT |
| Realized net profit | 1,097.8011−1,000 | 97.8011USDT |
| Net return | 97.8011÷1,000×100 | +9.78011% |
Realized profit or loss compares recovered money with the contribution after a completed sale and costs. Multiple purchases or a partial sale cannot use this single full-buy, full-sale model unchanged. Record remaining quantity, each cashflow and the cost assigned to the quantity sold consistently. This example does not replace country-specific tax calculations.
Four words on the order screen
An order-book quote offers price and quantity; a market order attempts execution against available counterpart orders in the selected market; a limit order requests execution within a specified price bound; a fill records the actual price and quantity traded. When reading Bybit's order guide, separate submission from execution. Neither a limit fill nor complete market execution is guaranteed.
“Buy order for 1,000USDT” alone cannot reveal the actual BTC quantity or average price. Individual fills and canceled remainder are needed. Signals and fills illustrates how available quantities make the average price differ from the best quote.
Separate wallet labels from secrets
The Ethereum wallet explanation describes a wallet as a tool for interacting with an account and an address as identifying the recipient. The account explanation describes a private key for signing transactions from an ordinary externally owned account. Sharing a receiving address and giving away a private key grant very different powers.
A recovery or seed phrase is critical recovery information for wallets supporting it. Follow Bitcoin.org's backup guidance to check how the particular wallet backs up. Keep recovery information out of public trading records. Network and TXID identify a transfer route and a transaction on it; continue to the withdrawal route for the recipient's credit state.
Record the fee currency next time
The completed example reads “1,000USDT paid → 0.00001BTC fee → 0.00999BTC received → 1.0989USDT sale fee → 1,097.8011USDT recovered.” Establish that chain before reducing it to one return number. In the blank plan and record, pair each actual quantity with its currency.
Sources read on 12 October 2026. The spot fee-currency document was updated on 10 September and the order guide on 30 September. Prices, fills and excluded costs are original model assumptions; this is not a dictionary covering every coin or project.