It may be tempting to delay transferring your domain until it's close to the expiry date, however in most cases this is not advisable as it can cause problems and delays with completing the transfer if it expires soon.
For most domains, transferring will not lose any time and renewing will add an additional year so there's no need to wait! - You will need to wait 60 days in most cases if you've just transferred or registered the domain name with another registrar though.
Some ccTLD domains however do "reset" like .DE domains - if you have questions about your specific domain name our UK-based Domain Experts are ready to help and can provide further guidance on how this will work for you.