Yes, I'm above average income for Sweden. Roughly my employer pays 1/4 payroll and 3/4 to me as gross salary. I pay 1/3 tax on gross salary and keep. 2/3. That means the net share of the employers' expense is roughly (2/3)x(3/4) which is 1/2 or 50%.
For a median income, the calculation would roughly instead be: the employer pays 1/4 payroll and the employee 1/4 income tax on that, meaning the employees take-home earnings are (3/4)x(3/4) ~ 0.56 so about 44% taxes (Which is surprisingly close to the figure you had there of 42.7%)
The VAT in my calculation was obviously the most exaggerated one because as you point out - a lot of my expenses have lower vat, or even negative tax (I pay a boat load of interests every month, which effectively have a -30% tax since they are completely deductible, even from earned income not just cap gains).
Oh: A source of great injustice in Sweden is that renters (predominantly low income earners) don't deduct interest rate expenses of those who own property (their landlords) while those who own their property deduct a crapload of interest, especially since we have a weird housing system with lots of huge long-term loans (100y mortgages are norm). Basically anyone who owns a flat or house deducts $5-25k a year of interest rates from their income tax. Essentially it's a huge transfer of money from renters to owners. A very regressive tax if you ask me.