Number of returns based on estimated figures for 2003 from IRS SOI bulletin (Table 22, IRS Excel download 04al22sr)
	National	Iowa-based(1), (2)	Iowa filers based in other states(3)	Total Returns to be filed in Iowa	Estimated % of returns affected (4)	Estimated number of returns affected	Hypothetical preparation cost per return	Estimated statewide return prep cost
1120	2,173,000	22,075	22,000	44,075	15.00%	6,611	500	3,305,643
1120S	3,334,400	33,874	34,000	67,874	15.00%	10,181	500	5,090,532
1065	2,376,800	24,717	25,000	49,717	15.00%	7,458	500	3,728,775
Sch. C		189,543		189,543	10.00%	18,954	250	4,738,581
Sch. F		17,385		17,385	10.00%	1,738	250	434,619
Partners (estimated number of affected partnerships x US average partners per partnership)						18,313	200	3,662,592
S Shareholders (Estimated Iowa S corporations x average US shareholders per corporation)						47,779	200	9,555,750
						111,034		30,516,492
S corporation shareholders, 2001:			5,371,820
S corporation returns:			2,986,456
Shareholders per S corp			1.799
(Source: S corporation returns, 2001:
http://www.irs.gov/pub/irs-soi/01scorp.pdf
Partnerships, 2001			2,132,117
Number of Partners, 2001			13,659,967
Avg number of partners			6.41
Source: http://www.irs.gov/pub/irs-soi/01partnr.pdf
(1) Iowa 1120/1120S assumed to be in same ratio in Iowa as national; only combined Iowa figures available
(2)Iowa 1040 filers assumed to file Sch C and F in same ratio as federal returns
(3) It is assumed that as many out of state business returns are filed as Iowa returns.
(4) Estimate of  percentage of returns that would elect to adjust 2003 depreciation in 2004 if permitted.  This estimate is only illustrative; we
believe it is conservative, but we have no access to statistics that would help us arrive at a better estimate.
Estimated Individual Returns and forms filed in 2003:
Iowa 1040s			1,326,189
Total 1040s			130,728,900
Sch C			18,684,200	14.29%	of federal returns
Schedule F			1,713,700	1.31%	of federal returns
Source:	http://www.irs.gov/pub/irs-soi/04al22sr.xls