Not so Ive bought and sold real estate and contracts can have all sorts of clauses and no penalties.
Contracts can be subject to sale of another property and no penalties at all. All you have to do is put the clause in and both sign it.
Contract date is not the sale date. The sale does not happen if the conditions are not met so you cant book CGT for that date.
Contracts can be subject to finance and no penalties if it does not finalise.
I dont think there is one hard and fast rule for this either and I think accountants have some leeway.
In respect of shares washing sales are illegal and they will stomp on your face if they catch you.
Just my opinion of course but with some personal experience.
