If I do a single premium pension contribution now (before October 31), can I split a single large contribution (single and large to get a better allocation rate) across two tax years or would it have to be two separate contributions/policies? I.e. if I want to contribute 5K for 2008 tax year and 5K for 2009 tax year, can I give the pension company a single contribution of 10K to get a higher allocation rate? Thanks.