Consolidated Balance Sheets (USD $)	Jun. 30, 2013	Dec. 31, 2012
Assets
Cash	$ 36,940	$ 111,851
Accounts receivable, net of allowance for bad debts of $44,992 and $52,100	307,525	440,195
Prepaid expenses and other current assets	136,098	115,777
Total current assets	480,563	667,823
Property and equipment, net of accumulated depreciation of $1,024,805 and $1,021,595	24,405	27,062
Intangible assets, net of accumulated amortization of $238,738 and $217,670	895,100	871,721
Deposits and other	31,639	15,346
Total assets	1,431,707	1,581,952
Liabilities and Stockholders' Deficit
Accounts payable and accrued liabilities	7,993,240	7,466,957
Bank overdraft	7,783	9,624
Deferred revenue	2,217,848	2,614,714
Derivative liability	37,990	31,440
Convertible debenture	30,000	30,000
Current portion - notes payable	2,531,245	2,486,810
Current portion - notes payable to related parties	343,207	724,790
Total current liabilities	13,161,313	13,364,335
Non-current portion - notes payable	1,530,025	1,188,868
Total liabilities	14,691,338	14,553,203
Temporary Equity, Carrying Amount	9,902,024	9,902,024
Liabilities and Stockholders' Deficit
Common Stock; $.00001 par value; 1,000,000,000 shares authorized 998,485,151 and 997,935,151 issued and outstanding as of June 30, 2013 and December 31, 2012	9,985	9,979
Additional paid-in-capital	19,264,374	19,254,154
Accumulated deficit	(41,985,265)	(41,621,437)
Accumulated other comprehensive income - foreign currency translation	(139,009)	(251,848)
Total Vertical Computer Systems, Inc. stockholders’ deficit	(22,849,915)	(22,609,152)
Noncontrolling interest	(311,740)	(264,123)
Total stockholders’ deficit	(23,161,655)	(22,873,275)
Total liabilities and stockholders' deficit	1,431,707	1,581,952
Series A Preferred Stock [Member]
Liabilities and Stockholders' Deficit
Temporary Equity, Carrying Amount	9,700,000	9,700,000
Series B Preferred Stock [Member]
Liabilities and Stockholders' Deficit
Temporary Equity, Carrying Amount	246	246
Series C Preferred Stock [Member]
Liabilities and Stockholders' Deficit
Temporary Equity, Carrying Amount	200,926	200,926
Series D Preferred Stock [Member]
Liabilities and Stockholders' Deficit
Temporary Equity, Carrying Amount	$ 852	$ 852