<PAGE>
EXHIBIT 99.1
Net Interest Margin Trust 1994-B
September, 2000
Payment: October 16, 2000
7.85% SECURITIZED NET INTEREST
MARGIN CERTIFICATES
Cusip # 393534AB8
Trust Account # 33-31958-0
Distribution Date: October 16, 2000
<TABLE>
<CAPTION>
<S> <C> <C>
Per $1,000
Securitized Net Interest Margin Certificates Original
-------------------------------------------- ----------
1. Amount Available 457,962.77
----------------
Pro rata Share of Excess from NIM 94-A 189,448.94
----------------
Interest
2. Aggregate Interest 31,478.21 0.34067327
-----------------------------------
3. Amount Applied to:
(a) accrued but unpaid Interest
4. Remaining:
(a) accrued but unpaid Interest
5. Monthly Interest 31,478.21
----------------
Principal
6. Current month's principal distribution 615,933.50 6.66594697
-----------------------------------
7. Remaining outstanding principal balance 4,196,021.85 45.4114919
-----------------------------------
Pool Factor 0.04541149
----------------
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 190,505,680.14**
----------------
9. Aggregate principal balance of loans
refinanced by Conseco Finance 380,380.04
----------------
10. Weighted average CPR 9.45%
----------------
11. Weighted average CDR 1.96%
----------------
12. Annualized net loss percentage 1.38%
----------------
13. Delinquency 30-59 day 1.35%
----------------
60-89 day 0.48%
----------------
90+ day 0.79%
----------------
Total 30+ 2.62%
----------------
</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 9/15/00.
<PAGE>
Net Interest Margin Trust 1994-B
September, 2000
Payment: October 16, 2000
Fee Assets
--------------------------------------------------
Guarantee Inside Fee Asset
Fees Refi Total
--------------------------------------------------
GTFC 1994-1 52,430.00 5,281.61 57,711.61
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
--------------------------------------------------
52,430.00 5,281.61 57,711.61
Total amount of Guarantee Fees and
Inside Refinance Payments 57,711.61
-----------------
Subordinated Servicing Fees 227,347.43
-----------------
Payment on Finance 1 Note 285,059.04
-----------------
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
September, 2000
Payment: October 16, 2000
Inside
Residual Refi Total
------------------------------------------------
GTFC 1994-1 0.00 0.00 0.00
GTFC 1994-2 16,596.90 (2,791.71) 13,805.19
GTFC 1994-3 63,385.59 (8,564.46) 54,821.13
GTFC 1994-4 103,426.96 850.45 104,277.41
------------------------------------------------
183,409.45 (10,505.72) 172,903.73
Total Residual and Inside
Refinance Payments 172,903.73