Deductions & credits

@PatriciaV

"Questions regarding "excess" real estate taxes refer to the deduction cap of $10,000 if filing jointly or $5,000 if filing separately."

Since Schedule A applies the $10,000 cap (MFJ) to the combined total of lines 5a,b&c, Am I correct to assume when you are using the term 'Real Estate taxes' you are actually referring to the total taxes (lines 5a+b+c)?

5a State & Local Income (or Gen Sales) tax

5b State & local Real Estate taxes

5c State & Local Pers. Prop. taxes

 

If not, can you explain why lines 5a & 5c are included in what must be under the $10k cap (MFJ)?

Thank you