Internal Revenue Bulletin:  2010-49 

December 6, 2010 

Rev. Rul. 2010-28


Table of Contents

2010 base period T-bill rate. The “base period T-bill rate” for the period ending September 30, 2010, is published as required by section 995(f) of the Code.

Section 995(f)(1) of the Internal Revenue Code provides that a shareholder of a DISC shall pay interest each taxable year in an amount equal to the product of the shareholder’s DISC-related deferred tax liability for the year and the “base period T-bill rate.” Under section 995(f)(4), the base period T-bill rate is the annual rate of interest determined by the Secretary to be equivalent to the average of the 1-year constant maturity Treasury yields, as published by the Board of Governors of the Federal Reserve System, for the 1-year period ending on September 30 of the calendar year ending with (or of the most recent calendar year ending before) the close of the taxable year of the shareholder. The base period T-bill rate for the period ending September 30, 2010, is 0.34 percent.

Pursuant to section 6222 of the Code, interest must be compounded daily. The table below provides factors for compounding the base period T-bill rate daily for any number of days in the shareholder’s taxable year (including a 52-53 week accounting period) for the 2010 base period T-bill rate. To compute the amount of the interest charge for the shareholder’s taxable year, multiply the amount of the shareholder’s DISC-related deferred tax liability (as defined in section 995(f)(2)) for that year by the base period T-bill rate factor corresponding to the number of days in the shareholder’s taxable year for which the interest charge is being computed. Generally, one would use the factor for 365 days. One would use a different factor only if the shareholder’s taxable year for which the interest charge being determined is a short taxable year, if the shareholder uses the 52-53 week taxable year, or if the shareholder’s taxable year is a leap year.

For the base period T-bill rates for the periods ending in prior years, see Rev. Rul. 2009-36, 2009-47 I.R.B. 650; Rev. Rul. 2008-51, 2008-2 C.B. 1171; Rev. Rul. 2007-64, 2007-2 C.B. 953; Rev. Rul. 2006-54, 2006-2 C.B. 834; Rev. Rul. 2005-70, 2005-2 C.B. 919; Rev. Rul. 2004-99, 2004-2 C.B. 720; Rev. Rul. 2003-2, 2003-1 C.B. 251; and Rev. Rul. 2002-68, 2002-2 C.B. 808.

DRAFTING INFORMATION

The principal author of this revenue ruling is Teresa Burridge Hughes of the Office of Associate Chief Counsel (International). For further information regarding this revenue ruling, contact Ms. Hughes at (202) 622-3850 (not a toll-free call).

2010 ANNUAL RATE, COMPOUNDED DAILY
0.34 PERCENT
DAYS FACTOR
1 .000009315
2 .000018630
3 .000027945
4 .000037261
5 .000046576
   
6 .000055892
7 .000065207
8 .000074523
9 .000083839
10 .000093155
   
11 .000102471
12 .000111787
13 .000121103
14 .000130419
15 .000139735
   
16 .000149052
17 .000158368
18 .000167685
19 .000177001
20 .000186318
   
21 .000195635
22 .000204952
23 .000214269
24 .000223586
25 .000232903
26 .000242220
27 .000251537
28 .000260855
29 .000270172
30 .000279490
   
31 .000288807
32 .000298125
33 .000307443
34 .000316761
35 .000326079
   
36 .000335397
37 .000344715
38 .000354034
39 .000363352
40 .000372670
   
41 .000381989
42 .000391308
43 .000400626
44 .000409945
45 .000419264
   
46 .000428583
47 .000437902
48 .000447221
49 .000456540
50 .000465860
   
51 .000475179
52 .000484499
53 .000493818
54 .000503138
55 .000512458
   
56 .000521777
57 .000531097
58 .000540417
59 .000549738
60 .000559058
   
61 .000568378
62 .000577698
63 .000587019
64 .000596339
65 .000605660
   
66 .000614981
67 .000624301
68 .000633622
69 .000642943
70 .000652264
   
71 .000661586
72 .000670907
73 .000680228
74 .000689549
75 .000698871
   
76 .000708193
77 .000717514
78 .000726836
79 .000736158
80 .000745480
   
81 .000754802
82 .000764124
83 .000773446
84 .000782768
85 .000792091
   
86 .000801413
87 .000810736
88 .000820058
89 .000829381
90 .000838704
   
91 .000848027
92 .000857350
93 .000866673
94 .000875996
95 .000885319
   
96 .000894642
97 .000903966
98 .000913289
99 .000922613
100 .000931936
   
101 .000941260
102 .000950584
103 .000959908
104 .000969232
105 .000978556
   
106 .000987880
107 .000997205
108 .001006529
109 .001015853
110 .001025178
   
111 .001034503
112 .001043827
113 .001053152
114 .001062477
115 .001071802
   
116 .001081127
117 .001090452
118 .001099777
119 .001109103
120 .001118428
   
121 .001127753
122 .001137079
123 .001146405
124 .001155730
125 .001165056
   
126 .001174382
127 .001183708
128 .001193034
129 .001202360
130 .001211687
   
131 .001221013
132 .001230340
133 .001239666
134 .001248993
135 .001258319
   
136 .001267646
137 .001276973
138 .001286300
139 .001295627
140 .001304954
   
141 .001314281
142 .001323609
143 .001332936
144 .001342264
145 .001351591
   
146 .001360919
147 .001370247
148 .001379574
149 .001388902
150 .001398230
   
151 .001407558
152 .001416887
153 .001426215
154 .001435543
155 .001444872
   
156 .001454200
157 .001463529
158 .001472858
159 .001482186
160 .001491515
   
161 .001500844
162 .001510173
163 .001519502
164 .001528832
165 .001538161
   
166 .001547490
167 .001556820
168 .001566149
169 .001575479
170 .001584809
   
171 .001594139
172 .001603469
173 .001612799
174 .001622129
175 .001631459
   
176 .001640789
177 .001650119
178 .001659450
179 .001668780
180 .001678111
   
181 .001687442
182 .001696772
183 .001706103
184 .001715434
185 .001724765
   
186 .001734096
187 .001743428
188 .001752759
189 .001762090
190 .001771422
   
191 .001780753
192 .001790085
193 .001799417
194 .001808749
195 .001818081
   
196 .001827413
197 .001836745
198 .001846077
199 .001855409
200 .001864741
   
201 .001874074
202 .001883406
203 .001892739
204 .001902072
205 .001911405
   
206 .001920737
207 .001930070
208 .001939403
209 .001948737
210 .001958070
   
211 .001967403
212 .001976736
213 .001986070
214 .001995404
215 .002004737
   
216 .002014071
217 .002023405
218 .002032739
219 .002042073
220 .002051407
   
221 .002060741
222 .002070075
223 .002079410
224 .002088744
225 .002098079
   
226 .002107413
227 .002116748
228 .002126083
229 .002135418
230 .002144752
   
231 .002154088
232 .002163423
233 .002172758
234 .002182093
235 .002191429
   
236 .002200764
237 .002210100
238 .002219435
239 .002228771
240 .002238107
   
241 .002247443
242 .002256779
243 .002266115
244 .002275451
245 .002284787
   
246 .002294124
247 .002303460
248 .002312797
249 .002322133
250 .002331470
   
251 .002340807
252 .002350144
253 .002359481
254 .002368818
255 .002378155
   
256 .002387492
257 .002396829
258 .002406167
259 .002415504
260 .002424842
   
261 .002434179
262 .002443517
263 .002452855
264 .002462193
265 .002471531
   
266 .002480869
267 .002490207
268 .002499545
269 .002508884
270 .002518222
   
271 .002527561
272 .002536899
273 .002546238
274 .002555577
275 .002564916
   
276 .002574255
277 .002583594
278 .002592933
279 .002602272
280 .002611611
   
281 .002620951
282 .002630290
283 .002639630
284 .002648969
285 .002658309
   
286 .002667649
287 .002676989
288 .002686329
289 .002695669
290 .002705009
   
291 .002714350
292 .002723690
293 .002733030
294 .002742371
295 .002751711
   
296 .002761052
297 .002770393
298 .002779734
299 .002789075
300 .002798416
   
301 .002807757
302 .002817098
303 .002826439
304 .002835781
305 .002845122
   
306 .002854464
307 .002863806
308 .002873147
309 .002882489
310 .002891831
   
311 .002901173
312 .002910515
313 .002919857
314 .002929200
315 .002938542
   
316 .002947884
317 .002957227
318 .002966570
319 .002975912
320 .002985255
   
321 .002994598
322 .003003941
323 .003013284
324 .003022627
325 .003031970
   
326 .003041314
327 .003050657
328 .003060001
329 .003069344
330 .003078688
   
331 .003088031
332 .003097375
333 .003106719
334 .003116063
335 .003125407
   
336 .003134752
337 .003144096
338 .003153440
339 .003162785
340 .003172129
   
341 .003181474
342 .003190818
343 .003200163
344 .003209508
345 .003218853
   
346 .003228198
347 .003237543
348 .003246888
349 .003256234
350 .003265579
   
351 .003274925
352 .003284270
353 .003293616
354 .003302962
355 .003312308
   
356 .003321653
357 .003330999
358 .003340346
359 .003349692
360 .003359038
   
361 .003368384
362 .003377731
363 .003387077
364 .003396424
365 .003405771
   
366 .003415117
367 .003424464
368 .003433811
369 .003443158
370 .003452506
   
371 .003461853

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