Offering bonus at completion?

[starchildmum]

Hello

I am making an offer on a flat for a BTL investment. The down-payment is 25% and the rest will be a BTL mortgage which is calculated by the potential monthly rental achievement. There are 3 other people interested in the property all circling around the asking price and we were ask to put our best and final offer forward this weekend. I cannot go higher as this would inflate my monthly rental price which is obviously subject to survey. Should I state a price which is too high/ unrealistic I might not be able to close at a later stage....Question: Could I offer my best and final offer plus a £5000 or 10.000 extra on day of completion? This might give me a little advantage even though I might not offer the highest house offer now?

Or is this really unusual and not well received?

It makes you sound like you might be a bit poor imo, particularly if you explain it like that in your offer. It means you are relying on 75% borrowing and at your limit with 25% down - resulting in your required calculations for yield. If either of the other two are cash investors or just families in a better deposit position, you don't look like a strong buyer imo.
It's also a bit unusual which also makes you look like you might be flakey.
What you shouldn't do is make a higher offer that you know you might have trouble closing on. That's crappy behaviour typical of a manipulative social parasite ;)

It sounds dodgy- I would sell to someone else tbh if I had multiple people interested in the property.

Do you think I have a change with a lower offer than someone else? I am also supposed to include a personal statement and pictures.

Sure you have a chance, how about if the higher offer is part of a chain or isn't even sale agreed. How about if the higher offer has timing restrictions or requests to expedite or delay. How about if the higher offer is a Mexican and the seller has something against taco's.
You have flexibility on your side. Play fair and if its meant to be you might get it.

Thank you that This was very helpful!

The tax man might not be happy, especially if it results in lost stamp duty revenue.