That will depend on the items in your accounts, but some of the key differences are that, under FRS 102;
- more items (such as financial instruments, biological assets) can or must be measured at fair value with changes in fair value taken to profit and loss;
- investment property revaluations affect profit and deferred tax;
- the profit and loss impact of defined benefit plans includes interest (not the expected return) on plan assets;
- for group defined benefit pension schemes the net defined benefit asset or liability must be recognised by at least one entity in the group;
- there is a choice of recognition method for government grants;
- lease incentives are spread over the lease term;
- exchange differences arising from foreign currency transactions and foreign operations may be measured differently;
- merger accounting is only permitted for group reconstructions;
- changes in controlling interests in subsidiaries are recognised in other comprehensive income
The recognition of certain items also changes which may affect results (such as separate recognition of intangible assets acquired as part of a business combination, assets recognised under contracts to construct and operate infrastructure for public services).
There may be other changes that affect your accounting profits depending on your circumstances. The above matters may also impact your taxable profits and/or your distributable profits.
Your accounts will still be prepared using the Companies Act formats but the primary statements and notes will be different. For example, a Statement of total recognised gains and losses, Note of historical cost profits and losses and Reconciliation of movements in shareholders’ funds, are not required).
The presentation of some items will differ, such as the categories of cash flow shown in the Cash Flow Statement and presentation of software costs as intangible assets.
There are also differences in the disclosure requirements, for example, FRS 102 requires disclosure of aggregate employee benefits for key management.