<p>Yes; many pools only include transactions based on fees and/or whether the transactions have standard forms. Most pool operators require that transactions have certain fees based on the size (in bytes, not BTC) of the transaction, and I believe that most require the transactions to be in a standard "Pay to address(es)" or "Pay to IP(s)" form. <a href="http://eligius.st/wiki/index.php/Eligius%3aAbout" rel="nofollow" title="Eligius Pool's Policies">Eligius</a>, for example, generally includes transactions if they have 40.96 &micro;BTC of fees per 512 bytes of transaction, but it could be more or less if they think the transaction seems like "spam" or you make arrangements with the pool operator.</p>

CC BY-SA 3.0
2012-08-28T05:06:50.903Z
2012-08-28T05:06:50.903Z
Daniel H
<p>Are there any pools that openly discriminate against some transactions? For example, they only put transactions with a fee in their blocks, thus ignoring all "free" transactions?</p>

CC BY-SA 3.0
2013-03-17T19:47:43.707Z
re: Eligius wow, is that correct? if the avg tx size is 250 bytes with a minimum fee of .0005 BTC, then by my calculations, Eligius is charging 40x this?
joe
CC BY-SA 3.0
2012-04-09T20:17:55.030Z
Since the standard client discriminates openly, I'd expect many pools to discriminate in the same way.
CodesInChaos
<mining-pools><transaction-fees><transaction-selection>
Do any pools discriminate against some transactions?
ThePiachu
# Do any pools discriminate against some transactions?

(Asked by: username_0 on 2012-04-09)

Are there any pools that openly discriminate against some transactions? For example, they only put transactions with a fee in their blocks, thus ignoring all "free" transactions?

**Tags:** mining-pools, transaction-fees, transaction-selection

> **Comments:**
> **username_2**: Since the standard client discriminates openly, I'd expect many pools to discriminate in the same way.  
> **username_1**: re: Eligius wow, is that correct? if the avg tx size is 250 bytes with a minimum fee of .0005 BTC, then by my calculations, Eligius is charging 40x this?  

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## 1 answers

### Answer by username_3 on 2012-08-28. Score: 1

Yes; many pools only include transactions based on fees and/or whether the transactions have standard forms. Most pool operators require that transactions have certain fees based on the size (in bytes, not BTC) of the transaction, and I believe that most require the transactions to be in a standard "Pay to address(es)" or "Pay to IP(s)" form. [Eligius](http://eligius.st/wiki/index.php/Eligius%3aAbout "Eligius Pool's Policies"), for example, generally includes transactions if they have 40.96 µBTC of fees per 512 bytes of transaction, but it could be more or less if they think the transaction seems like "spam" or you make arrangements with the pool operator.


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