user1142: Can I send 1 lovelace (0.000001 ADA) to another address or is there a minimum amount I need to send?
Of course there will also be the transaction fee of (currently) ~0.16 ADA, so such a transaction would not make much sense in most cases. Still I'm curious if it would work.

user82: In addition to fees (txFeePerByte + txFeeFixed) as shown in the protocol parameters below, you can see that there is as well a minUTxOValue field that specifies the lowest UTxO output.
Therefore, a transaction cannot contain less than txFeePerByte + txFeeFixed + minUTxOValue. These three parameters can be changed once governance is active.
Protocol parameters
    "txFeePerByte": 44,
    "minUTxOValue": 1000000,
    "stakePoolDeposit": 500000000,
    "decentralization": 0,
    "poolRetireMaxEpoch": 18,
    "extraPraosEntropy": null,
    "stakePoolTargetNum": 500,
    "maxBlockBodySize": 65536,
    "maxTxSize": 16384,
    "treasuryCut": 0.2,
    "minPoolCost": 340000000,
    "maxBlockHeaderSize": 1100,
    "protocolVersion": {
        "minor": 0,
        "major": 4
    },
    "txFeeFixed": 155381,
    "stakeAddressDeposit": 2000000,
    "monetaryExpansion": 3.0e-3,
    "poolPledgeInfluence": 0.3


user4023: A configurable network parameter called minimum_utxo_value is responsible for this. As the ADA price rises, the quantity field, expressed in lovelaces, will get lower and lower. Today, 21st October 2021, this value is 0.999978 ADA.
"minimum_utxo_value": {
    "quantity": 999978,
    "unit": "lovelace"
}

In order to see Cardano network's parameters, you need to execute a network command of the cardano-wallet utility (you must first run cardano-node and server).
cardano-wallet network parameters


user399: There is a minimum UTxO transaction size of 1 ADA not including fees. That means the absolute minimum transaction is 1 ADA + fees.

1142: <p>Can I send 1 lovelace (0.000001 ADA) to another address or is there a minimum amount I need to send?</p>
<p>Of course there will also be the transaction fee of (currently) ~0.16 ADA, so such a transaction would not make much sense in most cases. Still I'm curious if it would work.</p>
 82: <p>In addition to fees (<code>txFeePerByte</code> + <code>txFeeFixed</code>) as shown in the protocol parameters below, you can see that there is as well a <code>minUTxOValue</code> field that specifies the lowest UTxO output.</p>
<p>Therefore, a transaction cannot contain less than <code>txFeePerByte</code> + <code>txFeeFixed</code> + <code>minUTxOValue</code>. These three parameters can be changed once governance is active.</p>
<p>Protocol parameters</p>
<pre><code>    &quot;txFeePerByte&quot;: 44,
    &quot;minUTxOValue&quot;: 1000000,
    &quot;stakePoolDeposit&quot;: 500000000,
    &quot;decentralization&quot;: 0,
    &quot;poolRetireMaxEpoch&quot;: 18,
    &quot;extraPraosEntropy&quot;: null,
    &quot;stakePoolTargetNum&quot;: 500,
    &quot;maxBlockBodySize&quot;: 65536,
    &quot;maxTxSize&quot;: 16384,
    &quot;treasuryCut&quot;: 0.2,
    &quot;minPoolCost&quot;: 340000000,
    &quot;maxBlockHeaderSize&quot;: 1100,
    &quot;protocolVersion&quot;: {
        &quot;minor&quot;: 0,
        &quot;major&quot;: 4
    },
    &quot;txFeeFixed&quot;: 155381,
    &quot;stakeAddressDeposit&quot;: 2000000,
    &quot;monetaryExpansion&quot;: 3.0e-3,
    &quot;poolPledgeInfluence&quot;: 0.3
</code></pre>
 4023: <p>A configurable network parameter called <code>minimum_utxo_value</code> is responsible for this. As the ADA price rises, the <code>quantity</code> field, expressed in <em>lovelaces</em>, will get lower and lower. Today, 21st October 2021, this value is <strong>0.999978</strong> ADA.</p>
<pre><code>&quot;minimum_utxo_value&quot;: {
    &quot;quantity&quot;: 999978,
    &quot;unit&quot;: &quot;lovelace&quot;
}
</code></pre>
<p>In order to see Cardano network's parameters, you need to execute a <code>network</code> command of the <code>cardano-wallet</code> utility (you must first run <a href="https://medium.com/geekculture/cardano-911-wallet-command-line-interface-part-one-ad0ee5ac8509" rel="nofollow noreferrer"><em>cardano-node</em> and <em>server</em></a>).</p>
<pre><code>cardano-wallet network parameters
</code></pre>
 399: <p>There is a minimum UTxO transaction size of 1 ADA not including fees. That means the absolute minimum transaction is <code>1 ADA + fees</code>.</p>
