<PAGE>
Net Interest Margin Trust 1994-B
June, 2000
Payment: July 17, 2000
7.85% SECURITIZED NET INTEREST
MARGIN CERTIFICATES
Cusip # 393534AB8
Trust Account # 33-31958-0
Distribution Date: July 17, 2000
<TABLE>
<CAPTION>
Per $1,000
Securitized Net Interest Margin Certificates Original
-------------------------------------------- -----------
<S> <C> <C>
1. Amount Available 567,943.39
--------------
Pro rata Share of Excess from NIM 94-A 259,269.03
--------------
Interest
2. Aggregate Interest 47,540.35 0.51450595
-------------- ----------
3. Amount Applied to:
(a) accrued but unpaid Interest
4. Remaining:
(a) accrued but unpaid Interest
5. Monthly Interest 47,540.35
--------------
Principal
6. Current month's principal distribution 779,672.07 8.43800942
-------------- ----------
7. Remaining outstanding principal balance 6,487,642.72 70.2125835
-------------- ----------
Pool Factor 0.07021258
--------------
8. Present value of the projected remaining aggregate
cashflows of the Finance I Assets and the
Residual Assets, as of the immediately
preceding Distribution Date 288,014,692.16 **
--------------
9. Aggregate principal balance of loans
refinanced by Conseco Finance 708,648.04
--------------
10. Weighted average CPR 10.99%
--------------
11. Weighted average CDR 1.94%
--------------
12. Annualized net loss percentage 1.26%
--------------
13. Delinquency 30-59 day 1.18%
--------------
60-89 day 0.45%
--------------
90+ day 0.62%
--------------
Total 30+ 2.25%
--------------
</TABLE>
US Bank Trust N. A. Paying Agent/Bondholder Relations (612) 973-5800
** Represents present value of assets for NIM 94-A, 94-B, & 95-A, after
cross-collateralization, as of 6/15/00.
<PAGE>
Net Interest Margin Trust 1994-B
June, 2000
Payment: July 17, 2000
Fee Assets
--------------------------------------------------
Guarantee Inside Fee Asset
Fees Refi Total
--------------------------------------------------
GTFC 1994-1 194,915.97 9,359.65 204,275.62
GTFC 1994-2 0.00 0.00 0.00
GTFC 1994-3 0.00 0.00 0.00
GTFC 1994-4 0.00 0.00 0.00
--------------------------------------------------
194,915.97 9,359.65 204,275.62
Total amount of Guarantee Fees and
Inside Refinance Payments 204,275.62
----------
Subordinated Servicing Fees 180,661.97
----------
Payment on Finance 1 Note 384,937.59
----------
Allocable to Interest (current) 0.00
----------
Allocable to accrued but unpaid Interest 0.00
----------
Accrued and unpaid Trustee Fees 0.00
----------
Allocable to Principal 0.00
----------
Finance 1 Note Principal Balance 0.00
----------
<PAGE>
Net Interest Margin Trust 1994-B
June, 2000
Payment: July 17, 2000
Inside
Residual Refi Total
-----------------------------------------
GTFC 1994-1 0.00 0.00 0.00
GTFC 1994-2 0.00 5,550.42 5,550.42
GTFC 1994-3 696.69 10,680.17 11,376.86
GTFC 1994-4 152,080.11 13,998.41 166,078.52
-----------------------------------------
152,776.80 30,229.00 183,005.80
Total Residual and Inside
Refinance Payments 183,005.80