Fees for bitcoind sendmany, limits for number of end addresses

Question

I have two questions, both about sendmany.

First, is there any limit on how much transactions can I send with sendmany? (Apart from bash's limit with maximal parameter length.) Is sending about 500 transactions OK?

Second, what will be the fees used when I send a lot of transactions (and thus, probably creating a big transaction)?

The upvote function is there for this very reason. Please don't use the answer field for this type of comment. — bvpx, Mar 01 '14 at 06:54
This does not really answer the question. If you have a different question, you can ask it by clicking Ask Question. You can also add a bounty to draw more attention to this question once you have enough reputation. — Murch, Mar 01 '14 at 09:26

score 4 · Accepted Answer · edited Apr 13 '17 at 12:47

4

You can calculate your transaction size before sending the transaction. Here's some more info on that:

How to calculate transaction size before sending

A single transaction isn't limited to how many outputs it has, rather, there are some limits to how big a block is. You can read more here:

How many different destinations can a single transaction have?

EDIT: After calculating the size, you can further calculate fees by using this method (it takes into account some code in main.h):

What is the exact formula for calculating transaction fees?

edited Apr 13 '17 at 12:47

Community

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answered Mar 01 '14 at 06:53

bvpx

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That is interesting. I would guess the fees are then added based on "recommended" values and the size, right? – Karel Bílek Mar 02 '14 at 08:11
I am accepting this answer, but if someone answers the part about fees I will be glad. – Karel Bílek Mar 02 '14 at 19:39
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Sorry, I forgot to link this thread: http://bitcoin.stackexchange.com/questions/3400/what-is-the-exact-formula-for-calculating-transaction-fees – bvpx Mar 03 '14 at 04:47

Fees for bitcoind sendmany, limits for number of end addresses

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