well, technically you are right - you can merge several docs into 1 pdf. However, if there are no place in the e-visa system to upload accomodation details, then where are you planning on adding this pdf?
I suggest that you create an account on the Thai E-visa platform and start to add your details. That way you can decide if and where you should upload a pdf about your accomodation.
I understand that you want to plan ahead, but since you have a problem obtaining this document and the e-visa platform doesn't require it, my suggestion was, and still is, to apply with the documentation that are in fact asked for in the system and wait. They may or may not ask you to submit additional information. And they may or may not use the exact wording "proof of payment...", but there is a chance they might ask for it in a different way too, like in the NZ example "proof of accomodation, e.g. hotel booking..."
If it were me, I'd apply and wait to see what they ask for (if anything), but of course you do as you please. If you can come up with a solution on how to prove that you paid for accomodation that's great!
You wrote "Not sure if owner or agents would supply tax number on a reciept"... that lead me to believe you hadn't asked.
Anyway, as Brandon mentioned in another comment, there are nowhere to upload this information in the e-visa system... so if you really want to apply in KL - do so - while you figure out a solution what to do IF they request additional information from you regarding accomodation. If you are lucky the wording in such a request might be different... you won't know unless you try.
I'll add the requirements as they are listed in NZ as an example, see number 8. They ask for "proof of accomodation in Thailand, e.g. hotel bookings..."
I did understand the specific requirement. I mearly suggested that he could TRY, pray and hope! Hotel bookings for the entire period doesn't seem to be enough either (even though other embassies accept that) - they ask for "proof of payment". So the best is, of course, if he can get a reciept from the owner of the accomodation that he actually pays for... it doesn't seem like he's even asked!
...or he could just give up his Tourist Visa application in KL!
proof of payment for accomodation is definitely not a requirement for Tourist Visas on all Thai consulates/embassies. A lot of tourists like to travel around, "go with the flow" and apply for SETV without a set itinerary...
The owner from who you have the yearly lease SHOULD be able to provide you with a reciept with the requested info if you make a payment for 2 month (the 60 day visa period).
If not, then ask if you can end the lease (since they can't give you a reciept for your payment!), then get a new accomodation...
...or take a chance, pay for 2 nights in a hotel plus add a note stating you will be travelling around without a set itinerary and hope/pray they will accept this, since it's a pretty normal tourist behavior. (My guess it is even more normal for a tourist visa application, than having a yearly lease staying in 1 place for all 60 days.)
the Thai Embassy in your home country and a local immigration office in Thailand is NOT related at all (in fact they're even under different government ministries) meaning a Thai Embassy is not the right source!
The OP got solid advice here in an fb-group from strangers... to check the requirements at the immigration office where he plan to do his extension. No Thai Embassy abroad knows the exact requirements for each local immigration office.
you are a bit wrong there... with a multientry touristvisa you can come and go as you please during a 6 month period. Yes there is a fee to obtain the visa, but there are no reentry fees - it's multientry!
Also, if you are a genuine tourist, staying a week or so in various countries, returning to Thailand several times - immigration are unlikely to "ding you". They are cracking down on people doing border bounces, entering time and time again on visa exemptions = people that are trying to live/stay longterm in Thailand without having a visa at all!
that was for walk-in applications... they are moving to e-visa, so tomorrow (Dec 27) is the last day of in-person submission. Once on e-visa, the fee is to be paid when applying.
Anonym deltagare just out of curiousity - you were told it could take up to 10 working days and also read that many got their visa within 3-6 days... so what other answers are you looking for by this question? 🤔