<p>No, only the third case is affected. And the reason for that is that channels are actually bi-directional and have two fee policies depending on the direction they are used.</p>

<p>For example, channel AB has a policy from node A, and a policy from node B. If B increases the fee - it will only affect the payments going from B to A, not the other way around.</p>

<p>That means that scenario 2 in your case is always controlled only by node A. Scenario 3 includes the payment from B to A, so fees will be higher. Scenario 1 can also be affected by node B, but it will need to increase fees on the channel BC, not AB.</p>

CC BY-SA 4.0
2019-02-23T22:46:46.893Z
2019-02-23T22:46:46.893Z
Dmitry Laptev
<p>For the following setup:</p>

<pre><code>         A   ----(HIGH Fee rate) ----  B  ----------------  C
</code></pre>

<p>B want to charge A for more fee, he raises the fee of the channel between AB</p>

<ol>
<li>A pays to C</li>
<li>A pays to B</li>
<li>C pays to A</li>
</ol>

<p>Does high fee rate only affects case 1 only??</p>

<lightning-routing>
The scope of lightning channel fee
user8024165
# The scope of lightning channel fee

(Asked by: username_0 on 2019-02-23)

For the following setup:

```
         A   ----(HIGH Fee rate) ----  B  ----------------  C

```

B want to charge A for more fee, he raises the fee of the channel between AB

1. A pays to C
2. A pays to B
3. C pays to A

Does high fee rate only affects case 1 only??

**Tags:** lightning-routing


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## 1 answers

### Answer by username_1 on 2019-02-23. Score: 1

No, only the third case is affected. And the reason for that is that channels are actually bi-directional and have two fee policies depending on the direction they are used.

For example, channel AB has a policy from node A, and a policy from node B. If B increases the fee - it will only affect the payments going from B to A, not the other way around.

That means that scenario 2 in your case is always controlled only by node A. Scenario 3 includes the payment from B to A, so fees will be higher. Scenario 1 can also be affected by node B, but it will need to increase fees on the channel BC, not AB.


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