since you have an Enskild firma, there is no real need to post the income taxes paid unless you make the payments from the company bank account. If you do so, you post the amount D2012 C1930. If this has been the case, your bank account cannot have been reconsiled at all during the whole year, but you can post all of these entries now to make the bank account tie to the balance the bank statement shows for year end. If you have paid the taxes from a personal bank account, you don't have to post the amounts at all in the firm.
Acct 2512 is only used in ABs for corporate income tax which is why it is not in your accounts schedule.