I'm expat no longer living in Sweden but need refund form skatteverket.se. The income reported seems higher than actual received. Actual received is reverse calculated from salary and other benefits credited to account as employer has not provided any document.
Every month, your employer is supposed to not only give you your salary but also pay your taxes to Skatteverket. This is part of your salary. So if your salary is 20,000 SEK you'll get say 14,000 SEK paid out to your bank account and 6,000 SEK is paid to Skatteverket.
You're supposed to be informed about how much is paid to Skatteverket from your salary of course. At the end of the year, a kontrolluppgift is provided by your employer to Skatteverket, you're supposed to be provided a copy from your employer.
However, on Skatteverket.se you should be able to see how much tax has been paid for you. If you add that to your calculated income, does it not add up? If not, you'll have to ask your employer.