Find interest for the last financial year in an offset column and indirect reference

[Dares2]

hi
I am wanting to calculate interest payments from prior financial year (30 June) to current based on a dynamic range and offset and indirect sheet called loans and calculate principal remaining on the loan ie go to bottom of that list and total. info is below. Loan info included to show what it is looking up on loan sheet.
Can anyone help? Thankyou. Darren

Loans
Current Mth	30/04/2017
closest date or one immediately prior	28/02/2017
Cell reference	Loan!A12
Last twelve months
Total Loan Repayments last 12mths	142,279.02
Loan Repayments since 30 June prior year
Total principle remaining
TABLE
Payment Date	Ref	Beginning Balance	Payment	Principal	Interest	Ending Balance
1/06/2016	A12	950,000.00	71,139.51	66,000.00	6,000.00	837,441.31
30/08/2016	A13	925,000.00	71,139.51	64,000.00	7,000.00	837,441.31
30/11/2016	A14	900,000.00	71,139.51	62,558.69	8,580.82	837,441.31
28/02/2017	A15	837,441.31	71,139.51	58,749.97	12,389.54	778,691.34
31/05/2017	A16	1,588,691.34	71,139.51	47,246.42	23,893.09	1,541,444.92
30/09/2017	A17	1,631,444.92	71,139.51	39,116.56	32,022.95	1,592,328.36
30/11/2017	A18	1,592,328.36	71,139.51	55,172.60	15,966.91	1,537,155.76
28/02/2018	A19	1,537,155.76	71,139.51	48,398.03	22,741.48	1,488,757.73
31/05/2018	A20	1,488,757.73	71,139.51	48,624.60	22,514.91	1,440,133.13
30/09/2018	A21	1,440,133.13	71,139.50	42,257.93	28,881.57	1,397,875.20
30/11/2018	A22	1,397,875.20	71,139.51	57,122.46	14,017.05	1,340,752.74
28/02/2019	A23	1,340,752.74	71,139.50	51,303.71	19,835.79	1,289,449.03
31/05/2019	A24	1,289,449.03	71,139.51	51,638.80	19,500.71	1,237,810.23
30/09/2019	A25	1,237,810.23	71,139.51	46,315.48	24,824.03	1,191,494.75
30/11/2019	A26	1,191,494.75	71,139.51	59,191.92	11,947.59	1,132,302.83
29/02/2020	A27	1,132,302.83	71,139.51	54,201.50	16,938.01	1,078,101.33
31/05/2020	A28	1,078,101.33	71,139.51	54,835.07	16,304.44	1,023,266.26
30/09/2020	A29	1,023,266.26	71,139.50	50,618.11	20,521.39	972,648.15
30/11/2020	A30	972,648.15	71,139.51	61,386.38	9,753.13	911,261.77

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